Home / 4,081.20-5,631.84-2,312.70

Finding the Fourth Proportional to 4,081.20, 5,631.84 and 2,312.70

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Solution

The fourth proportional to 4,081.20, 5,631.84 and 2,312.70 is: 3,191.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,081.20 : 5,631.84 = 2,312.70 : x
  2. Step 2: Convert to fraction form
    4,081.20/5,631.84 = 2,312.70/x
  3. Step 3: Cross multiply
    4,081.20x = 5,631.84 × 2,312.70
  4. Step 4: Simplify right side
    4,081.20x = 13,024,756.37
  5. Step 5: Solve for x
    x = 13,024,756.37/4,081.20
  6. Step 6: Final answer
    x = 3,191.40

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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.