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Finding the Fourth Proportional to 7,295.81, 10,938.72 and 2,615.71

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Solution

The fourth proportional to 7,295.81, 10,938.72 and 2,615.71 is: 3,921.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,295.81 : 10,938.72 = 2,615.71 : x
  2. Step 2: Convert to fraction form
    7,295.81/10,938.72 = 2,615.71/x
  3. Step 3: Cross multiply
    7,295.81x = 10,938.72 × 2,615.71
  4. Step 4: Simplify right side
    7,295.81x = 28,612,560.18
  5. Step 5: Solve for x
    x = 28,612,560.18/7,295.81
  6. Step 6: Final answer
    x = 3,921.78

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.