Home / 5,386.74-8,078.88-1,491.48

Finding the Fourth Proportional to 5,386.74, 8,078.88 and 1,491.48

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Solution

The fourth proportional to 5,386.74, 8,078.88 and 1,491.48 is: 2,236.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,386.74 : 8,078.88 = 1,491.48 : x
  2. Step 2: Convert to fraction form
    5,386.74/8,078.88 = 1,491.48/x
  3. Step 3: Cross multiply
    5,386.74x = 8,078.88 × 1,491.48
  4. Step 4: Simplify right side
    5,386.74x = 12,049,487.94
  5. Step 5: Solve for x
    x = 12,049,487.94/5,386.74
  6. Step 6: Final answer
    x = 2,236.88

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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.