Home / 1,454.19-2,006.97-865.05

Finding the Fourth Proportional to 1,454.19, 2,006.97 and 865.05

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Solution

The fourth proportional to 1,454.19, 2,006.97 and 865.05 is: 1,193.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,454.19 : 2,006.97 = 865.05 : x
  2. Step 2: Convert to fraction form
    1,454.19/2,006.97 = 865.05/x
  3. Step 3: Cross multiply
    1,454.19x = 2,006.97 × 865.05
  4. Step 4: Simplify right side
    1,454.19x = 1,736,129.40
  5. Step 5: Solve for x
    x = 1,736,129.40/1,454.19
  6. Step 6: Final answer
    x = 1,193.88

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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.