Home / 6,390.27-9,581.56-2,639.16

Finding the Fourth Proportional to 6,390.27, 9,581.56 and 2,639.16

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Solution

The fourth proportional to 6,390.27, 9,581.56 and 2,639.16 is: 3,957.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,390.27 : 9,581.56 = 2,639.16 : x
  2. Step 2: Convert to fraction form
    6,390.27/9,581.56 = 2,639.16/x
  3. Step 3: Cross multiply
    6,390.27x = 9,581.56 × 2,639.16
  4. Step 4: Simplify right side
    6,390.27x = 25,287,269.89
  5. Step 5: Solve for x
    x = 25,287,269.89/6,390.27
  6. Step 6: Final answer
    x = 3,957.15

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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.