Home / 7,428.83-11,140.81-3,478.87

Finding the Fourth Proportional to 7,428.83, 11,140.81 and 3,478.87

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Solution

The fourth proportional to 7,428.83, 11,140.81 and 3,478.87 is: 5,217.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,428.83 : 11,140.81 = 3,478.87 : x
  2. Step 2: Convert to fraction form
    7,428.83/11,140.81 = 3,478.87/x
  3. Step 3: Cross multiply
    7,428.83x = 11,140.81 × 3,478.87
  4. Step 4: Simplify right side
    7,428.83x = 38,757,373.98
  5. Step 5: Solve for x
    x = 38,757,373.98/7,428.83
  6. Step 6: Final answer
    x = 5,217.16

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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.