Home / 7,428.11-11,140.75-3,729.34

Finding the Fourth Proportional to 7,428.11, 11,140.75 and 3,729.34

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Solution

The fourth proportional to 7,428.11, 11,140.75 and 3,729.34 is: 5,593.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,428.11 : 11,140.75 = 3,729.34 : x
  2. Step 2: Convert to fraction form
    7,428.11/11,140.75 = 3,729.34/x
  3. Step 3: Cross multiply
    7,428.11x = 11,140.75 × 3,729.34
  4. Step 4: Simplify right side
    7,428.11x = 41,547,644.61
  5. Step 5: Solve for x
    x = 41,547,644.61/7,428.11
  6. Step 6: Final answer
    x = 5,593.30

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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.