Home / 9,218.90-13,761.04-7,911.04

Finding the Fourth Proportional to 9,218.90, 13,761.04 and 7,911.04

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Solution

The fourth proportional to 9,218.90, 13,761.04 and 7,911.04 is: 11,808.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,218.90 : 13,761.04 = 7,911.04 : x
  2. Step 2: Convert to fraction form
    9,218.90/13,761.04 = 7,911.04/x
  3. Step 3: Cross multiply
    9,218.90x = 13,761.04 × 7,911.04
  4. Step 4: Simplify right side
    9,218.90x = 108,864,137.88
  5. Step 5: Solve for x
    x = 108,864,137.88/9,218.90
  6. Step 6: Final answer
    x = 11,808.80

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.