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Finding the Fourth Proportional to 2,875.54, 4,311.12 and 1,487.99

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Solution

The fourth proportional to 2,875.54, 4,311.12 and 1,487.99 is: 2,230.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,875.54 : 4,311.12 = 1,487.99 : x
  2. Step 2: Convert to fraction form
    2,875.54/4,311.12 = 1,487.99/x
  3. Step 3: Cross multiply
    2,875.54x = 4,311.12 × 1,487.99
  4. Step 4: Simplify right side
    2,875.54x = 6,414,903.45
  5. Step 5: Solve for x
    x = 6,414,903.45/2,875.54
  6. Step 6: Final answer
    x = 2,230.85

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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.