Home / 9,986.97-13,787.01-6,211.35

Finding the Fourth Proportional to 9,986.97, 13,787.01 and 6,211.35

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Solution

The fourth proportional to 9,986.97, 13,787.01 and 6,211.35 is: 8,574.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,986.97 : 13,787.01 = 6,211.35 : x
  2. Step 2: Convert to fraction form
    9,986.97/13,787.01 = 6,211.35/x
  3. Step 3: Cross multiply
    9,986.97x = 13,787.01 × 6,211.35
  4. Step 4: Simplify right side
    9,986.97x = 85,635,944.56
  5. Step 5: Solve for x
    x = 85,635,944.56/9,986.97
  6. Step 6: Final answer
    x = 8,574.77

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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.