Home / 7,781.25-10,738.13-4,986.75

Finding the Fourth Proportional to 7,781.25, 10,738.13 and 4,986.75

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Solution

The fourth proportional to 7,781.25, 10,738.13 and 4,986.75 is: 6,881.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,781.25 : 10,738.13 = 4,986.75 : x
  2. Step 2: Convert to fraction form
    7,781.25/10,738.13 = 4,986.75/x
  3. Step 3: Cross multiply
    7,781.25x = 10,738.13 × 4,986.75
  4. Step 4: Simplify right side
    7,781.25x = 53,548,344.84
  5. Step 5: Solve for x
    x = 53,548,344.84/7,781.25
  6. Step 6: Final answer
    x = 6,881.72

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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.