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Finding the Fourth Proportional to 7,713.12, 10,650.24 and 7,123.44

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Solution

The fourth proportional to 7,713.12, 10,650.24 and 7,123.44 is: 9,836.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,713.12 : 10,650.24 = 7,123.44 : x
  2. Step 2: Convert to fraction form
    7,713.12/10,650.24 = 7,123.44/x
  3. Step 3: Cross multiply
    7,713.12x = 10,650.24 × 7,123.44
  4. Step 4: Simplify right side
    7,713.12x = 75,866,345.63
  5. Step 5: Solve for x
    x = 75,866,345.63/7,713.12
  6. Step 6: Final answer
    x = 9,836.01

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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.