Home / 8,865.81-12,221.55-5,876.42

Finding the Fourth Proportional to 8,865.81, 12,221.55 and 5,876.42

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Solution

The fourth proportional to 8,865.81, 12,221.55 and 5,876.42 is: 8,100.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,865.81 : 12,221.55 = 5,876.42 : x
  2. Step 2: Convert to fraction form
    8,865.81/12,221.55 = 5,876.42/x
  3. Step 3: Cross multiply
    8,865.81x = 12,221.55 × 5,876.42
  4. Step 4: Simplify right side
    8,865.81x = 71,818,899.74
  5. Step 5: Solve for x
    x = 71,818,899.74/8,865.81
  6. Step 6: Final answer
    x = 8,100.66

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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.