Home / 2,876.34-4,315.41-928.70

Finding the Fourth Proportional to 2,876.34, 4,315.41 and 928.70

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Solution

The fourth proportional to 2,876.34, 4,315.41 and 928.70 is: 1,393.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,876.34 : 4,315.41 = 928.70 : x
  2. Step 2: Convert to fraction form
    2,876.34/4,315.41 = 928.70/x
  3. Step 3: Cross multiply
    2,876.34x = 4,315.41 × 928.70
  4. Step 4: Simplify right side
    2,876.34x = 4,007,699.69
  5. Step 5: Solve for x
    x = 4,007,699.69/2,876.34
  6. Step 6: Final answer
    x = 1,393.33

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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.