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Finding the Fourth Proportional to 2,257.62, 3,117 and 1,419.24

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Solution

The fourth proportional to 2,257.62, 3,117 and 1,419.24 is: 1,959.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,257.62 : 3,117 = 1,419.24 : x
  2. Step 2: Convert to fraction form
    2,257.62/3,117 = 1,419.24/x
  3. Step 3: Cross multiply
    2,257.62x = 3,117 × 1,419.24
  4. Step 4: Simplify right side
    2,257.62x = 4,423,771.08
  5. Step 5: Solve for x
    x = 4,423,771.08/2,257.62
  6. Step 6: Final answer
    x = 1,959.48

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Half scale
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Double scale
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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.