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Finding the Fourth Proportional to 7,520.84, 10,375.28 and 4,869.12

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Solution

The fourth proportional to 7,520.84, 10,375.28 and 4,869.12 is: 6,717.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,520.84 : 10,375.28 = 4,869.12 : x
  2. Step 2: Convert to fraction form
    7,520.84/10,375.28 = 4,869.12/x
  3. Step 3: Cross multiply
    7,520.84x = 10,375.28 × 4,869.12
  4. Step 4: Simplify right side
    7,520.84x = 50,518,483.35
  5. Step 5: Solve for x
    x = 50,518,483.35/7,520.84
  6. Step 6: Final answer
    x = 6,717.13

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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.