Home / 6,319.80-8,719.56-4,081.77

Finding the Fourth Proportional to 6,319.80, 8,719.56 and 4,081.77

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Solution

The fourth proportional to 6,319.80, 8,719.56 and 4,081.77 is: 5,631.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,319.80 : 8,719.56 = 4,081.77 : x
  2. Step 2: Convert to fraction form
    6,319.80/8,719.56 = 4,081.77/x
  3. Step 3: Cross multiply
    6,319.80x = 8,719.56 × 4,081.77
  4. Step 4: Simplify right side
    6,319.80x = 35,591,238.42
  5. Step 5: Solve for x
    x = 35,591,238.42/6,319.80
  6. Step 6: Final answer
    x = 5,631.70

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.