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Finding the Fourth Proportional to 5,387.57, 8,081.36 and 1,491.99

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Solution

The fourth proportional to 5,387.57, 8,081.36 and 1,491.99 is: 2,237.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,387.57 : 8,081.36 = 1,491.99 : x
  2. Step 2: Convert to fraction form
    5,387.57/8,081.36 = 1,491.99/x
  3. Step 3: Cross multiply
    5,387.57x = 8,081.36 × 1,491.99
  4. Step 4: Simplify right side
    5,387.57x = 12,057,308.31
  5. Step 5: Solve for x
    x = 12,057,308.31/5,387.57
  6. Step 6: Final answer
    x = 2,237.99

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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.