Home / 8,278.70-12,409.83-3,888.29

Finding the Fourth Proportional to 8,278.70, 12,409.83 and 3,888.29

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Solution

The fourth proportional to 8,278.70, 12,409.83 and 3,888.29 is: 5,828.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,278.70 : 12,409.83 = 3,888.29 : x
  2. Step 2: Convert to fraction form
    8,278.70/12,409.83 = 3,888.29/x
  3. Step 3: Cross multiply
    8,278.70x = 12,409.83 × 3,888.29
  4. Step 4: Simplify right side
    8,278.70x = 48,252,955.84
  5. Step 5: Solve for x
    x = 48,252,955.84/8,278.70
  6. Step 6: Final answer
    x = 5,828.57

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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.