Home / 8,278.56-12,409.64-3,888.16

Finding the Fourth Proportional to 8,278.56, 12,409.64 and 3,888.16

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Solution

The fourth proportional to 8,278.56, 12,409.64 and 3,888.16 is: 5,828.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,278.56 : 12,409.64 = 3,888.16 : x
  2. Step 2: Convert to fraction form
    8,278.56/12,409.64 = 3,888.16/x
  3. Step 3: Cross multiply
    8,278.56x = 12,409.64 × 3,888.16
  4. Step 4: Simplify right side
    8,278.56x = 48,250,665.86
  5. Step 5: Solve for x
    x = 48,250,665.86/8,278.56
  6. Step 6: Final answer
    x = 5,828.39

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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.