Home / 7,770.76-11,658.06-3,387.08

Finding the Fourth Proportional to 7,770.76, 11,658.06 and 3,387.08

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Solution

The fourth proportional to 7,770.76, 11,658.06 and 3,387.08 is: 5,081.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,770.76 : 11,658.06 = 3,387.08 : x
  2. Step 2: Convert to fraction form
    7,770.76/11,658.06 = 3,387.08/x
  3. Step 3: Cross multiply
    7,770.76x = 11,658.06 × 3,387.08
  4. Step 4: Simplify right side
    7,770.76x = 39,486,781.86
  5. Step 5: Solve for x
    x = 39,486,781.86/7,770.76
  6. Step 6: Final answer
    x = 5,081.46

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1.5x scale

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.