Home / 1,258.83-1,737.69-1,225.71

Finding the Fourth Proportional to 1,258.83, 1,737.69 and 1,225.71

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Solution

The fourth proportional to 1,258.83, 1,737.69 and 1,225.71 is: 1,691.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,258.83 : 1,737.69 = 1,225.71 : x
  2. Step 2: Convert to fraction form
    1,258.83/1,737.69 = 1,225.71/x
  3. Step 3: Cross multiply
    1,258.83x = 1,737.69 × 1,225.71
  4. Step 4: Simplify right side
    1,258.83x = 2,129,904.01
  5. Step 5: Solve for x
    x = 2,129,904.01/1,258.83
  6. Step 6: Final answer
    x = 1,691.97

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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.