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Finding the Fourth Proportional to 7,722.31, 10,651.16 and 4,890.14

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Solution

The fourth proportional to 7,722.31, 10,651.16 and 4,890.14 is: 6,744.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,722.31 : 10,651.16 = 4,890.14 : x
  2. Step 2: Convert to fraction form
    7,722.31/10,651.16 = 4,890.14/x
  3. Step 3: Cross multiply
    7,722.31x = 10,651.16 × 4,890.14
  4. Step 4: Simplify right side
    7,722.31x = 52,085,639.11
  5. Step 5: Solve for x
    x = 52,085,639.11/7,722.31
  6. Step 6: Final answer
    x = 6,744.83

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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.