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Finding the Fourth Proportional to 2,171.40, 3,256.86 and 632.40

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Solution

The fourth proportional to 2,171.40, 3,256.86 and 632.40 is: 948.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,171.40 : 3,256.86 = 632.40 : x
  2. Step 2: Convert to fraction form
    2,171.40/3,256.86 = 632.40/x
  3. Step 3: Cross multiply
    2,171.40x = 3,256.86 × 632.40
  4. Step 4: Simplify right side
    2,171.40x = 2,059,638.26
  5. Step 5: Solve for x
    x = 2,059,638.26/2,171.40
  6. Step 6: Final answer
    x = 948.53

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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.