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Finding the Fourth Proportional to 8,964.61, 12,371.46 and 4,931.61

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Solution

The fourth proportional to 8,964.61, 12,371.46 and 4,931.61 is: 6,805.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,964.61 : 12,371.46 = 4,931.61 : x
  2. Step 2: Convert to fraction form
    8,964.61/12,371.46 = 4,931.61/x
  3. Step 3: Cross multiply
    8,964.61x = 12,371.46 × 4,931.61
  4. Step 4: Simplify right side
    8,964.61x = 61,011,153.99
  5. Step 5: Solve for x
    x = 61,011,153.99/8,964.61
  6. Step 6: Final answer
    x = 6,805.78

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.