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Finding the Fourth Proportional to 2,791.91, 4,182.41 and 1,555.59

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Solution

The fourth proportional to 2,791.91, 4,182.41 and 1,555.59 is: 2,330.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,791.91 : 4,182.41 = 1,555.59 : x
  2. Step 2: Convert to fraction form
    2,791.91/4,182.41 = 1,555.59/x
  3. Step 3: Cross multiply
    2,791.91x = 4,182.41 × 1,555.59
  4. Step 4: Simplify right side
    2,791.91x = 6,506,115.17
  5. Step 5: Solve for x
    x = 6,506,115.17/2,791.91
  6. Step 6: Final answer
    x = 2,330.35

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.