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Finding the Fourth Proportional to 3,019.68, 4,527.75 and 939.12

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Solution

The fourth proportional to 3,019.68, 4,527.75 and 939.12 is: 1,408.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,019.68 : 4,527.75 = 939.12 : x
  2. Step 2: Convert to fraction form
    3,019.68/4,527.75 = 939.12/x
  3. Step 3: Cross multiply
    3,019.68x = 4,527.75 × 939.12
  4. Step 4: Simplify right side
    3,019.68x = 4,252,100.58
  5. Step 5: Solve for x
    x = 4,252,100.58/3,019.68
  6. Step 6: Final answer
    x = 1,408.13

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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.