Home / 5,385.03-8,077.55-1,687.28

Finding the Fourth Proportional to 5,385.03, 8,077.55 and 1,687.28

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Solution

The fourth proportional to 5,385.03, 8,077.55 and 1,687.28 is: 2,530.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,385.03 : 8,077.55 = 1,687.28 : x
  2. Step 2: Convert to fraction form
    5,385.03/8,077.55 = 1,687.28/x
  3. Step 3: Cross multiply
    5,385.03x = 8,077.55 × 1,687.28
  4. Step 4: Simplify right side
    5,385.03x = 13,629,039.74
  5. Step 5: Solve for x
    x = 13,629,039.74/5,385.03
  6. Step 6: Final answer
    x = 2,530.91

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Similar ratio
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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.