Home / 2,567.11-3,542.62-1,388.19

Finding the Fourth Proportional to 2,567.11, 3,542.62 and 1,388.19

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Solution

The fourth proportional to 2,567.11, 3,542.62 and 1,388.19 is: 1,915.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,567.11 : 3,542.62 = 1,388.19 : x
  2. Step 2: Convert to fraction form
    2,567.11/3,542.62 = 1,388.19/x
  3. Step 3: Cross multiply
    2,567.11x = 3,542.62 × 1,388.19
  4. Step 4: Simplify right side
    2,567.11x = 4,917,822.15
  5. Step 5: Solve for x
    x = 4,917,822.15/2,567.11
  6. Step 6: Final answer
    x = 1,915.70

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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.