Home / 5,431.30-8,132.55-4,279.30

Finding the Fourth Proportional to 5,431.30, 8,132.55 and 4,279.30

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Solution

The fourth proportional to 5,431.30, 8,132.55 and 4,279.30 is: 6,407.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,431.30 : 8,132.55 = 4,279.30 : x
  2. Step 2: Convert to fraction form
    5,431.30/8,132.55 = 4,279.30/x
  3. Step 3: Cross multiply
    5,431.30x = 8,132.55 × 4,279.30
  4. Step 4: Simplify right side
    5,431.30x = 34,801,621.22
  5. Step 5: Solve for x
    x = 34,801,621.22/5,431.30
  6. Step 6: Final answer
    x = 6,407.60

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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.