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Finding the Fourth Proportional to 2,435.80, 3,655.26 and 956.20

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Solution

The fourth proportional to 2,435.80, 3,655.26 and 956.20 is: 1,434.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,435.80 : 3,655.26 = 956.20 : x
  2. Step 2: Convert to fraction form
    2,435.80/3,655.26 = 956.20/x
  3. Step 3: Cross multiply
    2,435.80x = 3,655.26 × 956.20
  4. Step 4: Simplify right side
    2,435.80x = 3,495,159.61
  5. Step 5: Solve for x
    x = 3,495,159.61/2,435.80
  6. Step 6: Final answer
    x = 1,434.91

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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.