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Finding the Fourth Proportional to 9,242.01, 12,768.45 and 8,786.84

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Solution

The fourth proportional to 9,242.01, 12,768.45 and 8,786.84 is: 12,139.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,242.01 : 12,768.45 = 8,786.84 : x
  2. Step 2: Convert to fraction form
    9,242.01/12,768.45 = 8,786.84/x
  3. Step 3: Cross multiply
    9,242.01x = 12,768.45 × 8,786.84
  4. Step 4: Simplify right side
    9,242.01x = 112,194,263.36
  5. Step 5: Solve for x
    x = 112,194,263.36/9,242.01
  6. Step 6: Final answer
    x = 12,139.60

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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.