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Finding the Fourth Proportional to 7,259.70, 10,879.98 and 2,874.76

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Solution

The fourth proportional to 7,259.70, 10,879.98 and 2,874.76 is: 4,308.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,259.70 : 10,879.98 = 2,874.76 : x
  2. Step 2: Convert to fraction form
    7,259.70/10,879.98 = 2,874.76/x
  3. Step 3: Cross multiply
    7,259.70x = 10,879.98 × 2,874.76
  4. Step 4: Simplify right side
    7,259.70x = 31,277,334.12
  5. Step 5: Solve for x
    x = 31,277,334.12/7,259.70
  6. Step 6: Final answer
    x = 4,308.35

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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.