Home / 7,780.75-11,646.15-4,077.70

Finding the Fourth Proportional to 7,780.75, 11,646.15 and 4,077.70

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Solution

The fourth proportional to 7,780.75, 11,646.15 and 4,077.70 is: 6,103.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,780.75 : 11,646.15 = 4,077.70 : x
  2. Step 2: Convert to fraction form
    7,780.75/11,646.15 = 4,077.70/x
  3. Step 3: Cross multiply
    7,780.75x = 11,646.15 × 4,077.70
  4. Step 4: Simplify right side
    7,780.75x = 47,489,505.86
  5. Step 5: Solve for x
    x = 47,489,505.86/7,780.75
  6. Step 6: Final answer
    x = 6,103.46

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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.