Home / 5,690.91-7,853.55-3,138.96

Finding the Fourth Proportional to 5,690.91, 7,853.55 and 3,138.96

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Solution

The fourth proportional to 5,690.91, 7,853.55 and 3,138.96 is: 4,331.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,690.91 : 7,853.55 = 3,138.96 : x
  2. Step 2: Convert to fraction form
    5,690.91/7,853.55 = 3,138.96/x
  3. Step 3: Cross multiply
    5,690.91x = 7,853.55 × 3,138.96
  4. Step 4: Simplify right side
    5,690.91x = 24,651,999.87
  5. Step 5: Solve for x
    x = 24,651,999.87/5,690.91
  6. Step 6: Final answer
    x = 4,331.82

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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.