Home / 2,191.19-3,287.25-631.18

Finding the Fourth Proportional to 2,191.19, 3,287.25 and 631.18

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Solution

The fourth proportional to 2,191.19, 3,287.25 and 631.18 is: 946.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,191.19 : 3,287.25 = 631.18 : x
  2. Step 2: Convert to fraction form
    2,191.19/3,287.25 = 631.18/x
  3. Step 3: Cross multiply
    2,191.19x = 3,287.25 × 631.18
  4. Step 4: Simplify right side
    2,191.19x = 2,074,846.46
  5. Step 5: Solve for x
    x = 2,074,846.46/2,191.19
  6. Step 6: Final answer
    x = 946.90

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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.