Home / 1,540.04-2,320.45-1,272.13

Finding the Fourth Proportional to 1,540.04, 2,320.45 and 1,272.13

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Solution

The fourth proportional to 1,540.04, 2,320.45 and 1,272.13 is: 1,916.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,540.04 : 2,320.45 = 1,272.13 : x
  2. Step 2: Convert to fraction form
    1,540.04/2,320.45 = 1,272.13/x
  3. Step 3: Cross multiply
    1,540.04x = 2,320.45 × 1,272.13
  4. Step 4: Simplify right side
    1,540.04x = 2,951,914.06
  5. Step 5: Solve for x
    x = 2,951,914.06/1,540.04
  6. Step 6: Final answer
    x = 1,916.78

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.