Home / 8,678.43-11,971.87-5,693.85

Finding the Fourth Proportional to 8,678.43, 11,971.87 and 5,693.85

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Solution

The fourth proportional to 8,678.43, 11,971.87 and 5,693.85 is: 7,854.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,678.43 : 11,971.87 = 5,693.85 : x
  2. Step 2: Convert to fraction form
    8,678.43/11,971.87 = 5,693.85/x
  3. Step 3: Cross multiply
    8,678.43x = 11,971.87 × 5,693.85
  4. Step 4: Simplify right side
    8,678.43x = 68,166,017.76
  5. Step 5: Solve for x
    x = 68,166,017.76/8,678.43
  6. Step 6: Final answer
    x = 7,854.65

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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.