Home / 5,280.91-7,286.42-3,157.13

Finding the Fourth Proportional to 5,280.91, 7,286.42 and 3,157.13

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Solution

The fourth proportional to 5,280.91, 7,286.42 and 3,157.13 is: 4,356.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,280.91 : 7,286.42 = 3,157.13 : x
  2. Step 2: Convert to fraction form
    5,280.91/7,286.42 = 3,157.13/x
  3. Step 3: Cross multiply
    5,280.91x = 7,286.42 × 3,157.13
  4. Step 4: Simplify right side
    5,280.91x = 23,004,146.64
  5. Step 5: Solve for x
    x = 23,004,146.64/5,280.91
  6. Step 6: Final answer
    x = 4,356.10

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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.