Home / 5,432.75-8,149.13-1,328.75

Finding the Fourth Proportional to 5,432.75, 8,149.13 and 1,328.75

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Solution

The fourth proportional to 5,432.75, 8,149.13 and 1,328.75 is: 1,993.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,432.75 : 8,149.13 = 1,328.75 : x
  2. Step 2: Convert to fraction form
    5,432.75/8,149.13 = 1,328.75/x
  3. Step 3: Cross multiply
    5,432.75x = 8,149.13 × 1,328.75
  4. Step 4: Simplify right side
    5,432.75x = 10,828,156.49
  5. Step 5: Solve for x
    x = 10,828,156.49/5,432.75
  6. Step 6: Final answer
    x = 1,993.13

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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.