Home / 9,389.76-12,957.60-5,197.92

Finding the Fourth Proportional to 9,389.76, 12,957.60 and 5,197.92

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Solution

The fourth proportional to 9,389.76, 12,957.60 and 5,197.92 is: 7,172.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,389.76 : 12,957.60 = 5,197.92 : x
  2. Step 2: Convert to fraction form
    9,389.76/12,957.60 = 5,197.92/x
  3. Step 3: Cross multiply
    9,389.76x = 12,957.60 × 5,197.92
  4. Step 4: Simplify right side
    9,389.76x = 67,352,568.19
  5. Step 5: Solve for x
    x = 67,352,568.19/9,389.76
  6. Step 6: Final answer
    x = 7,172.98

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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.