Home / 5,281.16-7,286.77-3,157.38

Finding the Fourth Proportional to 5,281.16, 7,286.77 and 3,157.38

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Solution

The fourth proportional to 5,281.16, 7,286.77 and 3,157.38 is: 4,356.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,281.16 : 7,286.77 = 3,157.38 : x
  2. Step 2: Convert to fraction form
    5,281.16/7,286.77 = 3,157.38/x
  3. Step 3: Cross multiply
    5,281.16x = 7,286.77 × 3,157.38
  4. Step 4: Simplify right side
    5,281.16x = 23,007,101.86
  5. Step 5: Solve for x
    x = 23,007,101.86/5,281.16
  6. Step 6: Final answer
    x = 4,356.45

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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.