Home / 7,781.42-11,663.46-4,084.07

Finding the Fourth Proportional to 7,781.42, 11,663.46 and 4,084.07

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Solution

The fourth proportional to 7,781.42, 11,663.46 and 4,084.07 is: 6,121.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,781.42 : 11,663.46 = 4,084.07 : x
  2. Step 2: Convert to fraction form
    7,781.42/11,663.46 = 4,084.07/x
  3. Step 3: Cross multiply
    7,781.42x = 11,663.46 × 4,084.07
  4. Step 4: Simplify right side
    7,781.42x = 47,634,328.76
  5. Step 5: Solve for x
    x = 47,634,328.76/7,781.42
  6. Step 6: Final answer
    x = 6,121.55

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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.