Home / 2,590.11-3,885.17-1,129.10

Finding the Fourth Proportional to 2,590.11, 3,885.17 and 1,129.10

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Solution

The fourth proportional to 2,590.11, 3,885.17 and 1,129.10 is: 1,693.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,590.11 : 3,885.17 = 1,129.10 : x
  2. Step 2: Convert to fraction form
    2,590.11/3,885.17 = 1,129.10/x
  3. Step 3: Cross multiply
    2,590.11x = 3,885.17 × 1,129.10
  4. Step 4: Simplify right side
    2,590.11x = 4,386,720.38
  5. Step 5: Solve for x
    x = 4,386,720.38/2,590.11
  6. Step 6: Final answer
    x = 1,693.64

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Half scale
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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.