Home / 1,543.13-2,129.51-844.50

Finding the Fourth Proportional to 1,543.13, 2,129.51 and 844.50

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Solution

The fourth proportional to 1,543.13, 2,129.51 and 844.50 is: 1,165.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,543.13 : 2,129.51 = 844.50 : x
  2. Step 2: Convert to fraction form
    1,543.13/2,129.51 = 844.50/x
  3. Step 3: Cross multiply
    1,543.13x = 2,129.51 × 844.50
  4. Step 4: Simplify right side
    1,543.13x = 1,798,373.31
  5. Step 5: Solve for x
    x = 1,798,373.31/1,543.13
  6. Step 6: Final answer
    x = 1,165.41

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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.