Home / 5,119.27-7,679.05-1,421.77

Finding the Fourth Proportional to 5,119.27, 7,679.05 and 1,421.77

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Solution

The fourth proportional to 5,119.27, 7,679.05 and 1,421.77 is: 2,132.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,119.27 : 7,679.05 = 1,421.77 : x
  2. Step 2: Convert to fraction form
    5,119.27/7,679.05 = 1,421.77/x
  3. Step 3: Cross multiply
    5,119.27x = 7,679.05 × 1,421.77
  4. Step 4: Simplify right side
    5,119.27x = 10,917,820.17
  5. Step 5: Solve for x
    x = 10,917,820.17/5,119.27
  6. Step 6: Final answer
    x = 2,132.69

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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.