Home / 6,391.79-8,816.55-4,126.01

Finding the Fourth Proportional to 6,391.79, 8,816.55 and 4,126.01

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Solution

The fourth proportional to 6,391.79, 8,816.55 and 4,126.01 is: 5,691.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,391.79 : 8,816.55 = 4,126.01 : x
  2. Step 2: Convert to fraction form
    6,391.79/8,816.55 = 4,126.01/x
  3. Step 3: Cross multiply
    6,391.79x = 8,816.55 × 4,126.01
  4. Step 4: Simplify right side
    6,391.79x = 36,377,188.30
  5. Step 5: Solve for x
    x = 36,377,188.30/6,391.79
  6. Step 6: Final answer
    x = 5,691.24

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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.