Home / 8,128.13-11,209.80-5,294.44

Finding the Fourth Proportional to 8,128.13, 11,209.80 and 5,294.44

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Solution

The fourth proportional to 8,128.13, 11,209.80 and 5,294.44 is: 7,301.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,128.13 : 11,209.80 = 5,294.44 : x
  2. Step 2: Convert to fraction form
    8,128.13/11,209.80 = 5,294.44/x
  3. Step 3: Cross multiply
    8,128.13x = 11,209.80 × 5,294.44
  4. Step 4: Simplify right side
    8,128.13x = 59,349,585.49
  5. Step 5: Solve for x
    x = 59,349,585.49/8,128.13
  6. Step 6: Final answer
    x = 7,301.75

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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.