Home / 7,719.48-11,577.74-3,766.78

Finding the Fourth Proportional to 7,719.48, 11,577.74 and 3,766.78

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Solution

The fourth proportional to 7,719.48, 11,577.74 and 3,766.78 is: 5,649.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,719.48 : 11,577.74 = 3,766.78 : x
  2. Step 2: Convert to fraction form
    7,719.48/11,577.74 = 3,766.78/x
  3. Step 3: Cross multiply
    7,719.48x = 11,577.74 × 3,766.78
  4. Step 4: Simplify right side
    7,719.48x = 43,610,799.48
  5. Step 5: Solve for x
    x = 43,610,799.48/7,719.48
  6. Step 6: Final answer
    x = 5,649.45

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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.