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Finding the Fourth Proportional to 2,443.80, 3,372.48 and 1,435.80

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Solution

The fourth proportional to 2,443.80, 3,372.48 and 1,435.80 is: 1,981.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,443.80 : 3,372.48 = 1,435.80 : x
  2. Step 2: Convert to fraction form
    2,443.80/3,372.48 = 1,435.80/x
  3. Step 3: Cross multiply
    2,443.80x = 3,372.48 × 1,435.80
  4. Step 4: Simplify right side
    2,443.80x = 4,842,206.78
  5. Step 5: Solve for x
    x = 4,842,206.78/2,443.80
  6. Step 6: Final answer
    x = 1,981.43

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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.