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Finding the Fourth Proportional to 8,995.84, 12,411 and 5,216.92

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Solution

The fourth proportional to 8,995.84, 12,411 and 5,216.92 is: 7,197.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,995.84 : 12,411 = 5,216.92 : x
  2. Step 2: Convert to fraction form
    8,995.84/12,411 = 5,216.92/x
  3. Step 3: Cross multiply
    8,995.84x = 12,411 × 5,216.92
  4. Step 4: Simplify right side
    8,995.84x = 64,747,194.12
  5. Step 5: Solve for x
    x = 64,747,194.12/8,995.84
  6. Step 6: Final answer
    x = 7,197.46

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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.