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Finding the Fourth Proportional to 7,882.17, 10,870.65 and 5,621.19

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Solution

The fourth proportional to 7,882.17, 10,870.65 and 5,621.19 is: 7,752.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,882.17 : 10,870.65 = 5,621.19 : x
  2. Step 2: Convert to fraction form
    7,882.17/10,870.65 = 5,621.19/x
  3. Step 3: Cross multiply
    7,882.17x = 10,870.65 × 5,621.19
  4. Step 4: Simplify right side
    7,882.17x = 61,105,989.07
  5. Step 5: Solve for x
    x = 61,105,989.07/7,882.17
  6. Step 6: Final answer
    x = 7,752.43

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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.