Home / 1,439.12-1,985.28-849.44

Finding the Fourth Proportional to 1,439.12, 1,985.28 and 849.44

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Solution

The fourth proportional to 1,439.12, 1,985.28 and 849.44 is: 1,171.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,439.12 : 1,985.28 = 849.44 : x
  2. Step 2: Convert to fraction form
    1,439.12/1,985.28 = 849.44/x
  3. Step 3: Cross multiply
    1,439.12x = 1,985.28 × 849.44
  4. Step 4: Simplify right side
    1,439.12x = 1,686,376.24
  5. Step 5: Solve for x
    x = 1,686,376.24/1,439.12
  6. Step 6: Final answer
    x = 1,171.81

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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.