Home / 5,385.07-8,077.61-1,687.62

Finding the Fourth Proportional to 5,385.07, 8,077.61 and 1,687.62

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Solution

The fourth proportional to 5,385.07, 8,077.61 and 1,687.62 is: 2,531.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,385.07 : 8,077.61 = 1,687.62 : x
  2. Step 2: Convert to fraction form
    5,385.07/8,077.61 = 1,687.62/x
  3. Step 3: Cross multiply
    5,385.07x = 8,077.61 × 1,687.62
  4. Step 4: Simplify right side
    5,385.07x = 13,631,936.19
  5. Step 5: Solve for x
    x = 13,631,936.19/5,385.07
  6. Step 6: Final answer
    x = 2,531.43

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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.