Home / 9,787.96-13,507.44-5,311.72

Finding the Fourth Proportional to 9,787.96, 13,507.44 and 5,311.72

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Solution

The fourth proportional to 9,787.96, 13,507.44 and 5,311.72 is: 7,330.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,787.96 : 13,507.44 = 5,311.72 : x
  2. Step 2: Convert to fraction form
    9,787.96/13,507.44 = 5,311.72/x
  3. Step 3: Cross multiply
    9,787.96x = 13,507.44 × 5,311.72
  4. Step 4: Simplify right side
    9,787.96x = 71,747,739.20
  5. Step 5: Solve for x
    x = 71,747,739.20/9,787.96
  6. Step 6: Final answer
    x = 7,330.20

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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.