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Finding the Fourth Proportional to 8,681.82, 12,946.48 and 8,602.88

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Solution

The fourth proportional to 8,681.82, 12,946.48 and 8,602.88 is: 12,828.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,681.82 : 12,946.48 = 8,602.88 : x
  2. Step 2: Convert to fraction form
    8,681.82/12,946.48 = 8,602.88/x
  3. Step 3: Cross multiply
    8,681.82x = 12,946.48 × 8,602.88
  4. Step 4: Simplify right side
    8,681.82x = 111,376,976.01
  5. Step 5: Solve for x
    x = 111,376,976.01/8,681.82
  6. Step 6: Final answer
    x = 12,828.76

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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.