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Finding the Fourth Proportional to 2,880.77, 4,321.13 and 1,125.94

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Solution

The fourth proportional to 2,880.77, 4,321.13 and 1,125.94 is: 1,688.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,880.77 : 4,321.13 = 1,125.94 : x
  2. Step 2: Convert to fraction form
    2,880.77/4,321.13 = 1,125.94/x
  3. Step 3: Cross multiply
    2,880.77x = 4,321.13 × 1,125.94
  4. Step 4: Simplify right side
    2,880.77x = 4,865,340.10
  5. Step 5: Solve for x
    x = 4,865,340.10/2,880.77
  6. Step 6: Final answer
    x = 1,688.91

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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.