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Finding the Fourth Proportional to 2,630.59, 3,946.28 and 875.02

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Solution

The fourth proportional to 2,630.59, 3,946.28 and 875.02 is: 1,312.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,630.59 : 3,946.28 = 875.02 : x
  2. Step 2: Convert to fraction form
    2,630.59/3,946.28 = 875.02/x
  3. Step 3: Cross multiply
    2,630.59x = 3,946.28 × 875.02
  4. Step 4: Simplify right side
    2,630.59x = 3,453,073.93
  5. Step 5: Solve for x
    x = 3,453,073.93/2,630.59
  6. Step 6: Final answer
    x = 1,312.66

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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.