Home / 8,118.01-11,221.91-5,780.35

Finding the Fourth Proportional to 8,118.01, 11,221.91 and 5,780.35

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Solution

The fourth proportional to 8,118.01, 11,221.91 and 5,780.35 is: 7,990.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,118.01 : 11,221.91 = 5,780.35 : x
  2. Step 2: Convert to fraction form
    8,118.01/11,221.91 = 5,780.35/x
  3. Step 3: Cross multiply
    8,118.01x = 11,221.91 × 5,780.35
  4. Step 4: Simplify right side
    8,118.01x = 64,866,567.47
  5. Step 5: Solve for x
    x = 64,866,567.47/8,118.01
  6. Step 6: Final answer
    x = 7,990.45

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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.