Home / 1,327.80-1,987.65-1,036.20

Finding the Fourth Proportional to 1,327.80, 1,987.65 and 1,036.20

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Solution

The fourth proportional to 1,327.80, 1,987.65 and 1,036.20 is: 1,551.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,327.80 : 1,987.65 = 1,036.20 : x
  2. Step 2: Convert to fraction form
    1,327.80/1,987.65 = 1,036.20/x
  3. Step 3: Cross multiply
    1,327.80x = 1,987.65 × 1,036.20
  4. Step 4: Simplify right side
    1,327.80x = 2,059,602.93
  5. Step 5: Solve for x
    x = 2,059,602.93/1,327.80
  6. Step 6: Final answer
    x = 1,551.14

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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.