Home / 1,875.53-2,587.61-1,129.21

Finding the Fourth Proportional to 1,875.53, 2,587.61 and 1,129.21

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Solution

The fourth proportional to 1,875.53, 2,587.61 and 1,129.21 is: 1,557.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,875.53 : 2,587.61 = 1,129.21 : x
  2. Step 2: Convert to fraction form
    1,875.53/2,587.61 = 1,129.21/x
  3. Step 3: Cross multiply
    1,875.53x = 2,587.61 × 1,129.21
  4. Step 4: Simplify right side
    1,875.53x = 2,921,951.44
  5. Step 5: Solve for x
    x = 2,921,951.44/1,875.53
  6. Step 6: Final answer
    x = 1,557.93

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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.