Home / 5,420.62-8,132.10-1,722.40

Finding the Fourth Proportional to 5,420.62, 8,132.10 and 1,722.40

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Solution

The fourth proportional to 5,420.62, 8,132.10 and 1,722.40 is: 2,583.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,420.62 : 8,132.10 = 1,722.40 : x
  2. Step 2: Convert to fraction form
    5,420.62/8,132.10 = 1,722.40/x
  3. Step 3: Cross multiply
    5,420.62x = 8,132.10 × 1,722.40
  4. Step 4: Simplify right side
    5,420.62x = 14,006,729.04
  5. Step 5: Solve for x
    x = 14,006,729.04/5,420.62
  6. Step 6: Final answer
    x = 2,583.97

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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.