Home / 2,875.76-4,311.84-1,231.40

Finding the Fourth Proportional to 2,875.76, 4,311.84 and 1,231.40

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Solution

The fourth proportional to 2,875.76, 4,311.84 and 1,231.40 is: 1,846.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,875.76 : 4,311.84 = 1,231.40 : x
  2. Step 2: Convert to fraction form
    2,875.76/4,311.84 = 1,231.40/x
  3. Step 3: Cross multiply
    2,875.76x = 4,311.84 × 1,231.40
  4. Step 4: Simplify right side
    2,875.76x = 5,309,599.78
  5. Step 5: Solve for x
    x = 5,309,599.78/2,875.76
  6. Step 6: Final answer
    x = 1,846.33

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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.