Home / 1,548.13-2,136.42-885.00

Finding the Fourth Proportional to 1,548.13, 2,136.42 and 885.00

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Solution

The fourth proportional to 1,548.13, 2,136.42 and 885.00 is: 1,221.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,548.13 : 2,136.42 = 885.00 : x
  2. Step 2: Convert to fraction form
    1,548.13/2,136.42 = 885.00/x
  3. Step 3: Cross multiply
    1,548.13x = 2,136.42 × 885.00
  4. Step 4: Simplify right side
    1,548.13x = 1,890,726.36
  5. Step 5: Solve for x
    x = 1,890,726.36/1,548.13
  6. Step 6: Final answer
    x = 1,221.30

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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.