Home / 8,918.60-13,391.37-7,084.58

Finding the Fourth Proportional to 8,918.60, 13,391.37 and 7,084.58

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Solution

The fourth proportional to 8,918.60, 13,391.37 and 7,084.58 is: 10,637.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,918.60 : 13,391.37 = 7,084.58 : x
  2. Step 2: Convert to fraction form
    8,918.60/13,391.37 = 7,084.58/x
  3. Step 3: Cross multiply
    8,918.60x = 13,391.37 × 7,084.58
  4. Step 4: Simplify right side
    8,918.60x = 94,872,165.12
  5. Step 5: Solve for x
    x = 94,872,165.12/8,918.60
  6. Step 6: Final answer
    x = 10,637.57

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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.