Home / 7,780.59-11,670.98-3,401.15

Finding the Fourth Proportional to 7,780.59, 11,670.98 and 3,401.15

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Solution

The fourth proportional to 7,780.59, 11,670.98 and 3,401.15 is: 5,101.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,780.59 : 11,670.98 = 3,401.15 : x
  2. Step 2: Convert to fraction form
    7,780.59/11,670.98 = 3,401.15/x
  3. Step 3: Cross multiply
    7,780.59x = 11,670.98 × 3,401.15
  4. Step 4: Simplify right side
    7,780.59x = 39,694,678.27
  5. Step 5: Solve for x
    x = 39,694,678.27/7,780.59
  6. Step 6: Final answer
    x = 5,101.76

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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.