Home / 5,280.39-7,281.95-3,938.96

Finding the Fourth Proportional to 5,280.39, 7,281.95 and 3,938.96

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Solution

The fourth proportional to 5,280.39, 7,281.95 and 3,938.96 is: 5,432.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,280.39 : 7,281.95 = 3,938.96 : x
  2. Step 2: Convert to fraction form
    5,280.39/7,281.95 = 3,938.96/x
  3. Step 3: Cross multiply
    5,280.39x = 7,281.95 × 3,938.96
  4. Step 4: Simplify right side
    5,280.39x = 28,683,309.77
  5. Step 5: Solve for x
    x = 28,683,309.77/5,280.39
  6. Step 6: Final answer
    x = 5,432.04

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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.