Home / 2,088.60-3,129.30-1,357.80

Finding the Fourth Proportional to 2,088.60, 3,129.30 and 1,357.80

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Solution

The fourth proportional to 2,088.60, 3,129.30 and 1,357.80 is: 2,034.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,088.60 : 3,129.30 = 1,357.80 : x
  2. Step 2: Convert to fraction form
    2,088.60/3,129.30 = 1,357.80/x
  3. Step 3: Cross multiply
    2,088.60x = 3,129.30 × 1,357.80
  4. Step 4: Simplify right side
    2,088.60x = 4,248,963.54
  5. Step 5: Solve for x
    x = 4,248,963.54/2,088.60
  6. Step 6: Final answer
    x = 2,034.36

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.