Home / 8,764.13-13,143.36-2,919.38

Finding the Fourth Proportional to 8,764.13, 13,143.36 and 2,919.38

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Solution

The fourth proportional to 8,764.13, 13,143.36 and 2,919.38 is: 4,378.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,764.13 : 13,143.36 = 2,919.38 : x
  2. Step 2: Convert to fraction form
    8,764.13/13,143.36 = 2,919.38/x
  3. Step 3: Cross multiply
    8,764.13x = 13,143.36 × 2,919.38
  4. Step 4: Simplify right side
    8,764.13x = 38,370,407.55
  5. Step 5: Solve for x
    x = 38,370,407.55/8,764.13
  6. Step 6: Final answer
    x = 4,378.12

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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.