Home / 5,718.12-8,571.34-1,968.78

Finding the Fourth Proportional to 5,718.12, 8,571.34 and 1,968.78

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Solution

The fourth proportional to 5,718.12, 8,571.34 and 1,968.78 is: 2,951.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,718.12 : 8,571.34 = 1,968.78 : x
  2. Step 2: Convert to fraction form
    5,718.12/8,571.34 = 1,968.78/x
  3. Step 3: Cross multiply
    5,718.12x = 8,571.34 × 1,968.78
  4. Step 4: Simplify right side
    5,718.12x = 16,875,082.77
  5. Step 5: Solve for x
    x = 16,875,082.77/5,718.12
  6. Step 6: Final answer
    x = 2,951.16

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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.