Home / 7,781.90-10,739.94-4,425.76

Finding the Fourth Proportional to 7,781.90, 10,739.94 and 4,425.76

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Solution

The fourth proportional to 7,781.90, 10,739.94 and 4,425.76 is: 6,108.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,781.90 : 10,739.94 = 4,425.76 : x
  2. Step 2: Convert to fraction form
    7,781.90/10,739.94 = 4,425.76/x
  3. Step 3: Cross multiply
    7,781.90x = 10,739.94 × 4,425.76
  4. Step 4: Simplify right side
    7,781.90x = 47,532,343.15
  5. Step 5: Solve for x
    x = 47,532,343.15/7,781.90
  6. Step 6: Final answer
    x = 6,108.06

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.