Home / 1,538.83-2,125.90-1,008.97

Finding the Fourth Proportional to 1,538.83, 2,125.90 and 1,008.97

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Solution

The fourth proportional to 1,538.83, 2,125.90 and 1,008.97 is: 1,393.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,538.83 : 2,125.90 = 1,008.97 : x
  2. Step 2: Convert to fraction form
    1,538.83/2,125.90 = 1,008.97/x
  3. Step 3: Cross multiply
    1,538.83x = 2,125.90 × 1,008.97
  4. Step 4: Simplify right side
    1,538.83x = 2,144,969.32
  5. Step 5: Solve for x
    x = 2,144,969.32/1,538.83
  6. Step 6: Final answer
    x = 1,393.90

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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.