Home / 5,151.32-7,728.90-2,379.32

Finding the Fourth Proportional to 5,151.32, 7,728.90 and 2,379.32

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Solution

The fourth proportional to 5,151.32, 7,728.90 and 2,379.32 is: 3,569.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,151.32 : 7,728.90 = 2,379.32 : x
  2. Step 2: Convert to fraction form
    5,151.32/7,728.90 = 2,379.32/x
  3. Step 3: Cross multiply
    5,151.32x = 7,728.90 × 2,379.32
  4. Step 4: Simplify right side
    5,151.32x = 18,389,526.35
  5. Step 5: Solve for x
    x = 18,389,526.35/5,151.32
  6. Step 6: Final answer
    x = 3,569.87

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1.5x scale

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.