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Finding the Fourth Proportional to 3,252.76, 4,879.98 and 912.77

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Solution

The fourth proportional to 3,252.76, 4,879.98 and 912.77 is: 1,369.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,252.76 : 4,879.98 = 912.77 : x
  2. Step 2: Convert to fraction form
    3,252.76/4,879.98 = 912.77/x
  3. Step 3: Cross multiply
    3,252.76x = 4,879.98 × 912.77
  4. Step 4: Simplify right side
    3,252.76x = 4,454,320.69
  5. Step 5: Solve for x
    x = 4,454,320.69/3,252.76
  6. Step 6: Final answer
    x = 1,369.40

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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.