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Finding the Fourth Proportional to 2,594.28, 3,890.61 and 862.50

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Solution

The fourth proportional to 2,594.28, 3,890.61 and 862.50 is: 1,293.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,594.28 : 3,890.61 = 862.50 : x
  2. Step 2: Convert to fraction form
    2,594.28/3,890.61 = 862.50/x
  3. Step 3: Cross multiply
    2,594.28x = 3,890.61 × 862.50
  4. Step 4: Simplify right side
    2,594.28x = 3,355,651.13
  5. Step 5: Solve for x
    x = 3,355,651.13/2,594.28
  6. Step 6: Final answer
    x = 1,293.48

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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.