Home / 8,989.12-13,482.80-2,415.04

Finding the Fourth Proportional to 8,989.12, 13,482.80 and 2,415.04

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Solution

The fourth proportional to 8,989.12, 13,482.80 and 2,415.04 is: 3,622.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,989.12 : 13,482.80 = 2,415.04 : x
  2. Step 2: Convert to fraction form
    8,989.12/13,482.80 = 2,415.04/x
  3. Step 3: Cross multiply
    8,989.12x = 13,482.80 × 2,415.04
  4. Step 4: Simplify right side
    8,989.12x = 32,561,501.31
  5. Step 5: Solve for x
    x = 32,561,501.31/8,989.12
  6. Step 6: Final answer
    x = 3,622.32

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.