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Finding the Fourth Proportional to 8,840.95, 13,220.42 and 7,184.30

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Solution

The fourth proportional to 8,840.95, 13,220.42 and 7,184.30 is: 10,743.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,840.95 : 13,220.42 = 7,184.30 : x
  2. Step 2: Convert to fraction form
    8,840.95/13,220.42 = 7,184.30/x
  3. Step 3: Cross multiply
    8,840.95x = 13,220.42 × 7,184.30
  4. Step 4: Simplify right side
    8,840.95x = 94,979,361.38
  5. Step 5: Solve for x
    x = 94,979,361.38/8,840.95
  6. Step 6: Final answer
    x = 10,743.12

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.