Home / 7,767.82-10,726.68-4,978.18

Finding the Fourth Proportional to 7,767.82, 10,726.68 and 4,978.18

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Solution

The fourth proportional to 7,767.82, 10,726.68 and 4,978.18 is: 6,874.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,767.82 : 10,726.68 = 4,978.18 : x
  2. Step 2: Convert to fraction form
    7,767.82/10,726.68 = 4,978.18/x
  3. Step 3: Cross multiply
    7,767.82x = 10,726.68 × 4,978.18
  4. Step 4: Simplify right side
    7,767.82x = 53,399,343.84
  5. Step 5: Solve for x
    x = 53,399,343.84/7,767.82
  6. Step 6: Final answer
    x = 6,874.43

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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.