Home / 5,420.72-8,132.28-1,724.08

Finding the Fourth Proportional to 5,420.72, 8,132.28 and 1,724.08

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Solution

The fourth proportional to 5,420.72, 8,132.28 and 1,724.08 is: 2,586.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,420.72 : 8,132.28 = 1,724.08 : x
  2. Step 2: Convert to fraction form
    5,420.72/8,132.28 = 1,724.08/x
  3. Step 3: Cross multiply
    5,420.72x = 8,132.28 × 1,724.08
  4. Step 4: Simplify right side
    5,420.72x = 14,020,701.30
  5. Step 5: Solve for x
    x = 14,020,701.30/5,420.72
  6. Step 6: Final answer
    x = 2,586.50

Related Problems

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Half scale
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Double scale
Find fourth proportional to 5,421.72, 8,133.78 and 1,725.08
Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.