Home / 8,209.12-11,328.16-4,672.32

Finding the Fourth Proportional to 8,209.12, 11,328.16 and 4,672.32

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Solution

The fourth proportional to 8,209.12, 11,328.16 and 4,672.32 is: 6,447.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,209.12 : 11,328.16 = 4,672.32 : x
  2. Step 2: Convert to fraction form
    8,209.12/11,328.16 = 4,672.32/x
  3. Step 3: Cross multiply
    8,209.12x = 11,328.16 × 4,672.32
  4. Step 4: Simplify right side
    8,209.12x = 52,928,788.53
  5. Step 5: Solve for x
    x = 52,928,788.53/8,209.12
  6. Step 6: Final answer
    x = 6,447.56

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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.