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Finding the Fourth Proportional to 8,911.54, 13,291.98 and 8,397.58

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Solution

The fourth proportional to 8,911.54, 13,291.98 and 8,397.58 is: 12,525.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,911.54 : 13,291.98 = 8,397.58 : x
  2. Step 2: Convert to fraction form
    8,911.54/13,291.98 = 8,397.58/x
  3. Step 3: Cross multiply
    8,911.54x = 13,291.98 × 8,397.58
  4. Step 4: Simplify right side
    8,911.54x = 111,620,465.41
  5. Step 5: Solve for x
    x = 111,620,465.41/8,911.54
  6. Step 6: Final answer
    x = 12,525.38

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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.