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Finding the Fourth Proportional to 3,000.12, 4,489.20 and 1,768.08

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Solution

The fourth proportional to 3,000.12, 4,489.20 and 1,768.08 is: 2,645.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,000.12 : 4,489.20 = 1,768.08 : x
  2. Step 2: Convert to fraction form
    3,000.12/4,489.20 = 1,768.08/x
  3. Step 3: Cross multiply
    3,000.12x = 4,489.20 × 1,768.08
  4. Step 4: Simplify right side
    3,000.12x = 7,937,264.74
  5. Step 5: Solve for x
    x = 7,937,264.74/3,000.12
  6. Step 6: Final answer
    x = 2,645.65

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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.