Home / 2,315.24-3,191.46-1,650.92

Finding the Fourth Proportional to 2,315.24, 3,191.46 and 1,650.92

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Solution

The fourth proportional to 2,315.24, 3,191.46 and 1,650.92 is: 2,275.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,315.24 : 3,191.46 = 1,650.92 : x
  2. Step 2: Convert to fraction form
    2,315.24/3,191.46 = 1,650.92/x
  3. Step 3: Cross multiply
    2,315.24x = 3,191.46 × 1,650.92
  4. Step 4: Simplify right side
    2,315.24x = 5,268,845.14
  5. Step 5: Solve for x
    x = 5,268,845.14/2,315.24
  6. Step 6: Final answer
    x = 2,275.72

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Double scale
Find fourth proportional to 2,316.24, 3,192.84 and 1,651.92
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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.