Home / 7,421.70-11,132.55-4,656.90

Finding the Fourth Proportional to 7,421.70, 11,132.55 and 4,656.90

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Solution

The fourth proportional to 7,421.70, 11,132.55 and 4,656.90 is: 6,985.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,421.70 : 11,132.55 = 4,656.90 : x
  2. Step 2: Convert to fraction form
    7,421.70/11,132.55 = 4,656.90/x
  3. Step 3: Cross multiply
    7,421.70x = 11,132.55 × 4,656.90
  4. Step 4: Simplify right side
    7,421.70x = 51,843,172.10
  5. Step 5: Solve for x
    x = 51,843,172.10/7,421.70
  6. Step 6: Final answer
    x = 6,985.35

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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.