Home / 2,115.85-2,920.18-1,232.14

Finding the Fourth Proportional to 2,115.85, 2,920.18 and 1,232.14

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Solution

The fourth proportional to 2,115.85, 2,920.18 and 1,232.14 is: 1,700.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,115.85 : 2,920.18 = 1,232.14 : x
  2. Step 2: Convert to fraction form
    2,115.85/2,920.18 = 1,232.14/x
  3. Step 3: Cross multiply
    2,115.85x = 2,920.18 × 1,232.14
  4. Step 4: Simplify right side
    2,115.85x = 3,598,060.20
  5. Step 5: Solve for x
    x = 3,598,060.20/2,115.85
  6. Step 6: Final answer
    x = 1,700.53

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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.