Home / 6,278.40-8,669.70-3,924.72

Finding the Fourth Proportional to 6,278.40, 8,669.70 and 3,924.72

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Solution

The fourth proportional to 6,278.40, 8,669.70 and 3,924.72 is: 5,419.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,278.40 : 8,669.70 = 3,924.72 : x
  2. Step 2: Convert to fraction form
    6,278.40/8,669.70 = 3,924.72/x
  3. Step 3: Cross multiply
    6,278.40x = 8,669.70 × 3,924.72
  4. Step 4: Simplify right side
    6,278.40x = 34,026,144.98
  5. Step 5: Solve for x
    x = 34,026,144.98/6,278.40
  6. Step 6: Final answer
    x = 5,419.56

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.