Home / 8,128.58-11,213.57-5,294.93

Finding the Fourth Proportional to 8,128.58, 11,213.57 and 5,294.93

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Solution

The fourth proportional to 8,128.58, 11,213.57 and 5,294.93 is: 7,304.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,128.58 : 11,213.57 = 5,294.93 : x
  2. Step 2: Convert to fraction form
    8,128.58/11,213.57 = 5,294.93/x
  3. Step 3: Cross multiply
    8,128.58x = 11,213.57 × 5,294.93
  4. Step 4: Simplify right side
    8,128.58x = 59,375,068.20
  5. Step 5: Solve for x
    x = 59,375,068.20/8,128.58
  6. Step 6: Final answer
    x = 7,304.48

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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.