Home / 5,319.42-7,979.12-1,423.72

Finding the Fourth Proportional to 5,319.42, 7,979.12 and 1,423.72

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Solution

The fourth proportional to 5,319.42, 7,979.12 and 1,423.72 is: 2,135.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,319.42 : 7,979.12 = 1,423.72 : x
  2. Step 2: Convert to fraction form
    5,319.42/7,979.12 = 1,423.72/x
  3. Step 3: Cross multiply
    5,319.42x = 7,979.12 × 1,423.72
  4. Step 4: Simplify right side
    5,319.42x = 11,360,025.61
  5. Step 5: Solve for x
    x = 11,360,025.61/5,319.42
  6. Step 6: Final answer
    x = 2,135.58

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Similar ratio
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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.