Home / 8,917.11-12,307.14-5,139.60

Finding the Fourth Proportional to 8,917.11, 12,307.14 and 5,139.60

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Solution

The fourth proportional to 8,917.11, 12,307.14 and 5,139.60 is: 7,093.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,917.11 : 12,307.14 = 5,139.60 : x
  2. Step 2: Convert to fraction form
    8,917.11/12,307.14 = 5,139.60/x
  3. Step 3: Cross multiply
    8,917.11x = 12,307.14 × 5,139.60
  4. Step 4: Simplify right side
    8,917.11x = 63,253,776.74
  5. Step 5: Solve for x
    x = 63,253,776.74/8,917.11
  6. Step 6: Final answer
    x = 7,093.53

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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.