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Finding the Fourth Proportional to 2,847.88, 4,272.40 and 1,615.88

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Solution

The fourth proportional to 2,847.88, 4,272.40 and 1,615.88 is: 2,424.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,847.88 : 4,272.40 = 1,615.88 : x
  2. Step 2: Convert to fraction form
    2,847.88/4,272.40 = 1,615.88/x
  3. Step 3: Cross multiply
    2,847.88x = 4,272.40 × 1,615.88
  4. Step 4: Simplify right side
    2,847.88x = 6,903,685.71
  5. Step 5: Solve for x
    x = 6,903,685.71/2,847.88
  6. Step 6: Final answer
    x = 2,424.15

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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.