Home / 1,261.02-1,891.66-439.18

Finding the Fourth Proportional to 1,261.02, 1,891.66 and 439.18

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Solution

The fourth proportional to 1,261.02, 1,891.66 and 439.18 is: 658.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,261.02 : 1,891.66 = 439.18 : x
  2. Step 2: Convert to fraction form
    1,261.02/1,891.66 = 439.18/x
  3. Step 3: Cross multiply
    1,261.02x = 1,891.66 × 439.18
  4. Step 4: Simplify right side
    1,261.02x = 830,779.24
  5. Step 5: Solve for x
    x = 830,779.24/1,261.02
  6. Step 6: Final answer
    x = 658.82

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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.