Home / 7,780.30-11,670.45-2,586.17

Finding the Fourth Proportional to 7,780.30, 11,670.45 and 2,586.17

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Solution

The fourth proportional to 7,780.30, 11,670.45 and 2,586.17 is: 3,879.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,780.30 : 11,670.45 = 2,586.17 : x
  2. Step 2: Convert to fraction form
    7,780.30/11,670.45 = 2,586.17/x
  3. Step 3: Cross multiply
    7,780.30x = 11,670.45 × 2,586.17
  4. Step 4: Simplify right side
    7,780.30x = 30,181,754.75
  5. Step 5: Solve for x
    x = 30,181,754.75/7,780.30
  6. Step 6: Final answer
    x = 3,879.26

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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.