Home / 4,081.15-5,631.60-2,312.75

Finding the Fourth Proportional to 4,081.15, 5,631.60 and 2,312.75

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Solution

The fourth proportional to 4,081.15, 5,631.60 and 2,312.75 is: 3,191.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,081.15 : 5,631.60 = 2,312.75 : x
  2. Step 2: Convert to fraction form
    4,081.15/5,631.60 = 2,312.75/x
  3. Step 3: Cross multiply
    4,081.15x = 5,631.60 × 2,312.75
  4. Step 4: Simplify right side
    4,081.15x = 13,024,482.90
  5. Step 5: Solve for x
    x = 13,024,482.90/4,081.15
  6. Step 6: Final answer
    x = 3,191.38

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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.