Home / 8,989.12-13,479.60-3,792.16

Finding the Fourth Proportional to 8,989.12, 13,479.60 and 3,792.16

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Solution

The fourth proportional to 8,989.12, 13,479.60 and 3,792.16 is: 5,686.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,989.12 : 13,479.60 = 3,792.16 : x
  2. Step 2: Convert to fraction form
    8,989.12/13,479.60 = 3,792.16/x
  3. Step 3: Cross multiply
    8,989.12x = 13,479.60 × 3,792.16
  4. Step 4: Simplify right side
    8,989.12x = 51,116,799.94
  5. Step 5: Solve for x
    x = 51,116,799.94/8,989.12
  6. Step 6: Final answer
    x = 5,686.52

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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.