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Finding the Fourth Proportional to 7,869.27, 10,860.05 and 4,512.05

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Solution

The fourth proportional to 7,869.27, 10,860.05 and 4,512.05 is: 6,226.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,869.27 : 10,860.05 = 4,512.05 : x
  2. Step 2: Convert to fraction form
    7,869.27/10,860.05 = 4,512.05/x
  3. Step 3: Cross multiply
    7,869.27x = 10,860.05 × 4,512.05
  4. Step 4: Simplify right side
    7,869.27x = 49,001,134.71
  5. Step 5: Solve for x
    x = 49,001,134.71/7,869.27
  6. Step 6: Final answer
    x = 6,226.90

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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.