Home / 3,111.68-4,670.76-1,381.52

Finding the Fourth Proportional to 3,111.68, 4,670.76 and 1,381.52

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Solution

The fourth proportional to 3,111.68, 4,670.76 and 1,381.52 is: 2,073.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,111.68 : 4,670.76 = 1,381.52 : x
  2. Step 2: Convert to fraction form
    3,111.68/4,670.76 = 1,381.52/x
  3. Step 3: Cross multiply
    3,111.68x = 4,670.76 × 1,381.52
  4. Step 4: Simplify right side
    3,111.68x = 6,452,748.36
  5. Step 5: Solve for x
    x = 6,452,748.36/3,111.68
  6. Step 6: Final answer
    x = 2,073.72

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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.