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Finding the Fourth Proportional to 8,853.36, 13,270.31 and 7,815.91

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Solution

The fourth proportional to 8,853.36, 13,270.31 and 7,815.91 is: 11,715.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,853.36 : 13,270.31 = 7,815.91 : x
  2. Step 2: Convert to fraction form
    8,853.36/13,270.31 = 7,815.91/x
  3. Step 3: Cross multiply
    8,853.36x = 13,270.31 × 7,815.91
  4. Step 4: Simplify right side
    8,853.36x = 103,719,452.60
  5. Step 5: Solve for x
    x = 103,719,452.60/8,853.36
  6. Step 6: Final answer
    x = 11,715.26

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1.5x scale

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.