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Finding the Fourth Proportional to 6,590.64, 9,885.96 and 1,910.91

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Solution

The fourth proportional to 6,590.64, 9,885.96 and 1,910.91 is: 2,866.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,590.64 : 9,885.96 = 1,910.91 : x
  2. Step 2: Convert to fraction form
    6,590.64/9,885.96 = 1,910.91/x
  3. Step 3: Cross multiply
    6,590.64x = 9,885.96 × 1,910.91
  4. Step 4: Simplify right side
    6,590.64x = 18,891,179.82
  5. Step 5: Solve for x
    x = 18,891,179.82/6,590.64
  6. Step 6: Final answer
    x = 2,866.37

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Double scale
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Similar ratio
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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.