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Finding the Fourth Proportional to 2,935.88, 4,401.12 and 987.56

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Solution

The fourth proportional to 2,935.88, 4,401.12 and 987.56 is: 1,480.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,935.88 : 4,401.12 = 987.56 : x
  2. Step 2: Convert to fraction form
    2,935.88/4,401.12 = 987.56/x
  3. Step 3: Cross multiply
    2,935.88x = 4,401.12 × 987.56
  4. Step 4: Simplify right side
    2,935.88x = 4,346,370.07
  5. Step 5: Solve for x
    x = 4,346,370.07/2,935.88
  6. Step 6: Final answer
    x = 1,480.43

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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.