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Finding the Fourth Proportional to 5,921.78, 8,888.05 and 3,150.77

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Solution

The fourth proportional to 5,921.78, 8,888.05 and 3,150.77 is: 4,729.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,921.78 : 8,888.05 = 3,150.77 : x
  2. Step 2: Convert to fraction form
    5,921.78/8,888.05 = 3,150.77/x
  3. Step 3: Cross multiply
    5,921.78x = 8,888.05 × 3,150.77
  4. Step 4: Simplify right side
    5,921.78x = 28,004,141.10
  5. Step 5: Solve for x
    x = 28,004,141.10/5,921.78
  6. Step 6: Final answer
    x = 4,729.01

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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.