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Finding the Fourth Proportional to 8,758.97, 12,087.63 and 4,780.34

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Solution

The fourth proportional to 8,758.97, 12,087.63 and 4,780.34 is: 6,597.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,758.97 : 12,087.63 = 4,780.34 : x
  2. Step 2: Convert to fraction form
    8,758.97/12,087.63 = 4,780.34/x
  3. Step 3: Cross multiply
    8,758.97x = 12,087.63 × 4,780.34
  4. Step 4: Simplify right side
    8,758.97x = 57,782,981.19
  5. Step 5: Solve for x
    x = 57,782,981.19/8,758.97
  6. Step 6: Final answer
    x = 6,597.01

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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.