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Finding the Fourth Proportional to 5,777.78, 8,661.39 and 2,079.16

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Solution

The fourth proportional to 5,777.78, 8,661.39 and 2,079.16 is: 3,116.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,777.78 : 8,661.39 = 2,079.16 : x
  2. Step 2: Convert to fraction form
    5,777.78/8,661.39 = 2,079.16/x
  3. Step 3: Cross multiply
    5,777.78x = 8,661.39 × 2,079.16
  4. Step 4: Simplify right side
    5,777.78x = 18,008,386.18
  5. Step 5: Solve for x
    x = 18,008,386.18/5,777.78
  6. Step 6: Final answer
    x = 3,116.84

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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.