Home / 1,874.47-2,586.86-1,128.66

Finding the Fourth Proportional to 1,874.47, 2,586.86 and 1,128.66

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Solution

The fourth proportional to 1,874.47, 2,586.86 and 1,128.66 is: 1,557.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,874.47 : 2,586.86 = 1,128.66 : x
  2. Step 2: Convert to fraction form
    1,874.47/2,586.86 = 1,128.66/x
  3. Step 3: Cross multiply
    1,874.47x = 2,586.86 × 1,128.66
  4. Step 4: Simplify right side
    1,874.47x = 2,919,685.41
  5. Step 5: Solve for x
    x = 2,919,685.41/1,874.47
  6. Step 6: Final answer
    x = 1,557.61

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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.