Home / 4,081.12-5,631.66-2,312.40

Finding the Fourth Proportional to 4,081.12, 5,631.66 and 2,312.40

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Solution

The fourth proportional to 4,081.12, 5,631.66 and 2,312.40 is: 3,190.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,081.12 : 5,631.66 = 2,312.40 : x
  2. Step 2: Convert to fraction form
    4,081.12/5,631.66 = 2,312.40/x
  3. Step 3: Cross multiply
    4,081.12x = 5,631.66 × 2,312.40
  4. Step 4: Simplify right side
    4,081.12x = 13,022,650.58
  5. Step 5: Solve for x
    x = 13,022,650.58/4,081.12
  6. Step 6: Final answer
    x = 3,190.95

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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.