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Finding the Fourth Proportional to 8,937.84, 13,312.35 and 8,469.46

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Solution

The fourth proportional to 8,937.84, 13,312.35 and 8,469.46 is: 12,614.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,937.84 : 13,312.35 = 8,469.46 : x
  2. Step 2: Convert to fraction form
    8,937.84/13,312.35 = 8,469.46/x
  3. Step 3: Cross multiply
    8,937.84x = 13,312.35 × 8,469.46
  4. Step 4: Simplify right side
    8,937.84x = 112,748,432.47
  5. Step 5: Solve for x
    x = 112,748,432.47/8,937.84
  6. Step 6: Final answer
    x = 12,614.72

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.