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Finding the Fourth Proportional to 2,938.52, 4,408.08 and 830.16

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Solution

The fourth proportional to 2,938.52, 4,408.08 and 830.16 is: 1,245.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,938.52 : 4,408.08 = 830.16 : x
  2. Step 2: Convert to fraction form
    2,938.52/4,408.08 = 830.16/x
  3. Step 3: Cross multiply
    2,938.52x = 4,408.08 × 830.16
  4. Step 4: Simplify right side
    2,938.52x = 3,659,411.69
  5. Step 5: Solve for x
    x = 3,659,411.69/2,938.52
  6. Step 6: Final answer
    x = 1,245.32

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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.