Home / 7,478.13-11,217.84-1,931.43

Finding the Fourth Proportional to 7,478.13, 11,217.84 and 1,931.43

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Solution

The fourth proportional to 7,478.13, 11,217.84 and 1,931.43 is: 2,897.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,478.13 : 11,217.84 = 1,931.43 : x
  2. Step 2: Convert to fraction form
    7,478.13/11,217.84 = 1,931.43/x
  3. Step 3: Cross multiply
    7,478.13x = 11,217.84 × 1,931.43
  4. Step 4: Simplify right side
    7,478.13x = 21,666,472.71
  5. Step 5: Solve for x
    x = 21,666,472.71/7,478.13
  6. Step 6: Final answer
    x = 2,897.31

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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.