Home / 2,875.12-4,312.68-927.61

Finding the Fourth Proportional to 2,875.12, 4,312.68 and 927.61

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Solution

The fourth proportional to 2,875.12, 4,312.68 and 927.61 is: 1,391.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,875.12 : 4,312.68 = 927.61 : x
  2. Step 2: Convert to fraction form
    2,875.12/4,312.68 = 927.61/x
  3. Step 3: Cross multiply
    2,875.12x = 4,312.68 × 927.61
  4. Step 4: Simplify right side
    2,875.12x = 4,000,485.09
  5. Step 5: Solve for x
    x = 4,000,485.09/2,875.12
  6. Step 6: Final answer
    x = 1,391.42

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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.