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Finding the Fourth Proportional to 2,599.52, 3,899.36 and 868.64

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Solution

The fourth proportional to 2,599.52, 3,899.36 and 868.64 is: 1,302.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,599.52 : 3,899.36 = 868.64 : x
  2. Step 2: Convert to fraction form
    2,599.52/3,899.36 = 868.64/x
  3. Step 3: Cross multiply
    2,599.52x = 3,899.36 × 868.64
  4. Step 4: Simplify right side
    2,599.52x = 3,387,140.07
  5. Step 5: Solve for x
    x = 3,387,140.07/2,599.52
  6. Step 6: Final answer
    x = 1,302.99

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1.5x scale

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.