Home / 2,876.28-4,311.64-927.16

Finding the Fourth Proportional to 2,876.28, 4,311.64 and 927.16

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Solution

The fourth proportional to 2,876.28, 4,311.64 and 927.16 is: 1,389.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,876.28 : 4,311.64 = 927.16 : x
  2. Step 2: Convert to fraction form
    2,876.28/4,311.64 = 927.16/x
  3. Step 3: Cross multiply
    2,876.28x = 4,311.64 × 927.16
  4. Step 4: Simplify right side
    2,876.28x = 3,997,580.14
  5. Step 5: Solve for x
    x = 3,997,580.14/2,876.28
  6. Step 6: Final answer
    x = 1,389.84

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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.