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Finding the Fourth Proportional to 3,272.40, 4,901.40 and 2,840.40

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Solution

The fourth proportional to 3,272.40, 4,901.40 and 2,840.40 is: 4,254.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,272.40 : 4,901.40 = 2,840.40 : x
  2. Step 2: Convert to fraction form
    3,272.40/4,901.40 = 2,840.40/x
  3. Step 3: Cross multiply
    3,272.40x = 4,901.40 × 2,840.40
  4. Step 4: Simplify right side
    3,272.40x = 13,921,936.56
  5. Step 5: Solve for x
    x = 13,921,936.56/3,272.40
  6. Step 6: Final answer
    x = 4,254.35

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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.