Home / 1,539.02-2,125.61-1,121.24

Finding the Fourth Proportional to 1,539.02, 2,125.61 and 1,121.24

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Solution

The fourth proportional to 1,539.02, 2,125.61 and 1,121.24 is: 1,548.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,539.02 : 2,125.61 = 1,121.24 : x
  2. Step 2: Convert to fraction form
    1,539.02/2,125.61 = 1,121.24/x
  3. Step 3: Cross multiply
    1,539.02x = 2,125.61 × 1,121.24
  4. Step 4: Simplify right side
    1,539.02x = 2,383,306.93
  5. Step 5: Solve for x
    x = 2,383,306.93/1,539.02
  6. Step 6: Final answer
    x = 1,548.59

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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.