Home / 8,438.72-11,643.84-5,928.56

Finding the Fourth Proportional to 8,438.72, 11,643.84 and 5,928.56

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Solution

The fourth proportional to 8,438.72, 11,643.84 and 5,928.56 is: 8,180.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,438.72 : 11,643.84 = 5,928.56 : x
  2. Step 2: Convert to fraction form
    8,438.72/11,643.84 = 5,928.56/x
  3. Step 3: Cross multiply
    8,438.72x = 11,643.84 × 5,928.56
  4. Step 4: Simplify right side
    8,438.72x = 69,031,204.07
  5. Step 5: Solve for x
    x = 69,031,204.07/8,438.72
  6. Step 6: Final answer
    x = 8,180.29

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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.