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Finding the Fourth Proportional to 3,590.62, 5,385.89 and 1,400.88

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Solution

The fourth proportional to 3,590.62, 5,385.89 and 1,400.88 is: 2,101.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,590.62 : 5,385.89 = 1,400.88 : x
  2. Step 2: Convert to fraction form
    3,590.62/5,385.89 = 1,400.88/x
  3. Step 3: Cross multiply
    3,590.62x = 5,385.89 × 1,400.88
  4. Step 4: Simplify right side
    3,590.62x = 7,544,995.55
  5. Step 5: Solve for x
    x = 7,544,995.55/3,590.62
  6. Step 6: Final answer
    x = 2,101.31

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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.