Home / 1,543.34-2,129.81-844.71

Finding the Fourth Proportional to 1,543.34, 2,129.81 and 844.71

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Solution

The fourth proportional to 1,543.34, 2,129.81 and 844.71 is: 1,165.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,543.34 : 2,129.81 = 844.71 : x
  2. Step 2: Convert to fraction form
    1,543.34/2,129.81 = 844.71/x
  3. Step 3: Cross multiply
    1,543.34x = 2,129.81 × 844.71
  4. Step 4: Simplify right side
    1,543.34x = 1,799,067.58
  5. Step 5: Solve for x
    x = 1,799,067.58/1,543.34
  6. Step 6: Final answer
    x = 1,165.70

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1.5x scale

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.