Home / 7,808.76-10,778.40-5,451.66

Finding the Fourth Proportional to 7,808.76, 10,778.40 and 5,451.66

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Solution

The fourth proportional to 7,808.76, 10,778.40 and 5,451.66 is: 7,524.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,808.76 : 10,778.40 = 5,451.66 : x
  2. Step 2: Convert to fraction form
    7,808.76/10,778.40 = 5,451.66/x
  3. Step 3: Cross multiply
    7,808.76x = 10,778.40 × 5,451.66
  4. Step 4: Simplify right side
    7,808.76x = 58,760,172.14
  5. Step 5: Solve for x
    x = 58,760,172.14/7,808.76
  6. Step 6: Final answer
    x = 7,524.90

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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.