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Finding the Fourth Proportional to 2,877.06, 3,970.35 and 1,635.06

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Solution

The fourth proportional to 2,877.06, 3,970.35 and 1,635.06 is: 2,256.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,877.06 : 3,970.35 = 1,635.06 : x
  2. Step 2: Convert to fraction form
    2,877.06/3,970.35 = 1,635.06/x
  3. Step 3: Cross multiply
    2,877.06x = 3,970.35 × 1,635.06
  4. Step 4: Simplify right side
    2,877.06x = 6,491,760.47
  5. Step 5: Solve for x
    x = 6,491,760.47/2,877.06
  6. Step 6: Final answer
    x = 2,256.39

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.