Home / 2,447.39-3,377.37-1,385.14

Finding the Fourth Proportional to 2,447.39, 3,377.37 and 1,385.14

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Solution

The fourth proportional to 2,447.39, 3,377.37 and 1,385.14 is: 1,911.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,447.39 : 3,377.37 = 1,385.14 : x
  2. Step 2: Convert to fraction form
    2,447.39/3,377.37 = 1,385.14/x
  3. Step 3: Cross multiply
    2,447.39x = 3,377.37 × 1,385.14
  4. Step 4: Simplify right side
    2,447.39x = 4,678,130.28
  5. Step 5: Solve for x
    x = 4,678,130.28/2,447.39
  6. Step 6: Final answer
    x = 1,911.48

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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.