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Finding the Fourth Proportional to 5,386.71, 8,080.08 and 1,491.03

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Solution

The fourth proportional to 5,386.71, 8,080.08 and 1,491.03 is: 2,236.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,386.71 : 8,080.08 = 1,491.03 : x
  2. Step 2: Convert to fraction form
    5,386.71/8,080.08 = 1,491.03/x
  3. Step 3: Cross multiply
    5,386.71x = 8,080.08 × 1,491.03
  4. Step 4: Simplify right side
    5,386.71x = 12,047,641.68
  5. Step 5: Solve for x
    x = 12,047,641.68/5,386.71
  6. Step 6: Final answer
    x = 2,236.55

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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.