Home / 3,753.86-5,630.13-1,121.30

Finding the Fourth Proportional to 3,753.86, 5,630.13 and 1,121.30

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Solution

The fourth proportional to 3,753.86, 5,630.13 and 1,121.30 is: 1,681.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,753.86 : 5,630.13 = 1,121.30 : x
  2. Step 2: Convert to fraction form
    3,753.86/5,630.13 = 1,121.30/x
  3. Step 3: Cross multiply
    3,753.86x = 5,630.13 × 1,121.30
  4. Step 4: Simplify right side
    3,753.86x = 6,313,036.62
  5. Step 5: Solve for x
    x = 6,313,036.62/3,753.86
  6. Step 6: Final answer
    x = 1,681.75

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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.