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Finding the Fourth Proportional to 8,860.37, 12,215.90 and 7,261.16

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Solution

The fourth proportional to 8,860.37, 12,215.90 and 7,261.16 is: 10,011.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,860.37 : 12,215.90 = 7,261.16 : x
  2. Step 2: Convert to fraction form
    8,860.37/12,215.90 = 7,261.16/x
  3. Step 3: Cross multiply
    8,860.37x = 12,215.90 × 7,261.16
  4. Step 4: Simplify right side
    8,860.37x = 88,701,507.06
  5. Step 5: Solve for x
    x = 88,701,507.06/8,860.37
  6. Step 6: Final answer
    x = 10,011.04

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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.