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Finding the Fourth Proportional to 3,254.40, 4,874.40 and 2,678.40

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Solution

The fourth proportional to 3,254.40, 4,874.40 and 2,678.40 is: 4,011.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,254.40 : 4,874.40 = 2,678.40 : x
  2. Step 2: Convert to fraction form
    3,254.40/4,874.40 = 2,678.40/x
  3. Step 3: Cross multiply
    3,254.40x = 4,874.40 × 2,678.40
  4. Step 4: Simplify right side
    3,254.40x = 13,055,592.96
  5. Step 5: Solve for x
    x = 13,055,592.96/3,254.40
  6. Step 6: Final answer
    x = 4,011.67

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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.