Home / 1,517.39-2,265.45-1,298.12

Finding the Fourth Proportional to 1,517.39, 2,265.45 and 1,298.12

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Solution

The fourth proportional to 1,517.39, 2,265.45 and 1,298.12 is: 1,938.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,517.39 : 2,265.45 = 1,298.12 : x
  2. Step 2: Convert to fraction form
    1,517.39/2,265.45 = 1,298.12/x
  3. Step 3: Cross multiply
    1,517.39x = 2,265.45 × 1,298.12
  4. Step 4: Simplify right side
    1,517.39x = 2,940,814.63
  5. Step 5: Solve for x
    x = 2,940,814.63/1,517.39
  6. Step 6: Final answer
    x = 1,938.08

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.