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Finding the Fourth Proportional to 8,868.59, 13,241.98 and 7,820.35

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Solution

The fourth proportional to 8,868.59, 13,241.98 and 7,820.35 is: 11,676.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,868.59 : 13,241.98 = 7,820.35 : x
  2. Step 2: Convert to fraction form
    8,868.59/13,241.98 = 7,820.35/x
  3. Step 3: Cross multiply
    8,868.59x = 13,241.98 × 7,820.35
  4. Step 4: Simplify right side
    8,868.59x = 103,556,894.96
  5. Step 5: Solve for x
    x = 103,556,894.96/8,868.59
  6. Step 6: Final answer
    x = 11,676.82

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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.