Home / 2,131.24-2,941.14-1,247.56

Finding the Fourth Proportional to 2,131.24, 2,941.14 and 1,247.56

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Solution

The fourth proportional to 2,131.24, 2,941.14 and 1,247.56 is: 1,721.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,131.24 : 2,941.14 = 1,247.56 : x
  2. Step 2: Convert to fraction form
    2,131.24/2,941.14 = 1,247.56/x
  3. Step 3: Cross multiply
    2,131.24x = 2,941.14 × 1,247.56
  4. Step 4: Simplify right side
    2,131.24x = 3,669,248.62
  5. Step 5: Solve for x
    x = 3,669,248.62/2,131.24
  6. Step 6: Final answer
    x = 1,721.65

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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.