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Finding the Fourth Proportional to 2,342.40, 3,513.20 and 881.57

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Solution

The fourth proportional to 2,342.40, 3,513.20 and 881.57 is: 1,322.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,342.40 : 3,513.20 = 881.57 : x
  2. Step 2: Convert to fraction form
    2,342.40/3,513.20 = 881.57/x
  3. Step 3: Cross multiply
    2,342.40x = 3,513.20 × 881.57
  4. Step 4: Simplify right side
    2,342.40x = 3,097,109.75
  5. Step 5: Solve for x
    x = 3,097,109.75/2,342.40
  6. Step 6: Final answer
    x = 1,322.20

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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.