Home / 7,931.72-11,897.79-3,772.17

Finding the Fourth Proportional to 7,931.72, 11,897.79 and 3,772.17

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Solution

The fourth proportional to 7,931.72, 11,897.79 and 3,772.17 is: 5,658.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,931.72 : 11,897.79 = 3,772.17 : x
  2. Step 2: Convert to fraction form
    7,931.72/11,897.79 = 3,772.17/x
  3. Step 3: Cross multiply
    7,931.72x = 11,897.79 × 3,772.17
  4. Step 4: Simplify right side
    7,931.72x = 44,880,472.36
  5. Step 5: Solve for x
    x = 44,880,472.36/7,931.72
  6. Step 6: Final answer
    x = 5,658.35

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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.