Home / 7,639.76-11,456.92-3,476.28

Finding the Fourth Proportional to 7,639.76, 11,456.92 and 3,476.28

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Solution

The fourth proportional to 7,639.76, 11,456.92 and 3,476.28 is: 5,213.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,639.76 : 11,456.92 = 3,476.28 : x
  2. Step 2: Convert to fraction form
    7,639.76/11,456.92 = 3,476.28/x
  3. Step 3: Cross multiply
    7,639.76x = 11,456.92 × 3,476.28
  4. Step 4: Simplify right side
    7,639.76x = 39,827,461.86
  5. Step 5: Solve for x
    x = 39,827,461.86/7,639.76
  6. Step 6: Final answer
    x = 5,213.18

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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.