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Finding the Fourth Proportional to 8,878.60, 13,233.65 and 8,813.80

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Solution

The fourth proportional to 8,878.60, 13,233.65 and 8,813.80 is: 13,137.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,878.60 : 13,233.65 = 8,813.80 : x
  2. Step 2: Convert to fraction form
    8,878.60/13,233.65 = 8,813.80/x
  3. Step 3: Cross multiply
    8,878.60x = 13,233.65 × 8,813.80
  4. Step 4: Simplify right side
    8,878.60x = 116,638,744.37
  5. Step 5: Solve for x
    x = 116,638,744.37/8,878.60
  6. Step 6: Final answer
    x = 13,137.06

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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.