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Finding the Fourth Proportional to 8,754.04, 13,040.64 and 8,216.20

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Solution

The fourth proportional to 8,754.04, 13,040.64 and 8,216.20 is: 12,239.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,754.04 : 13,040.64 = 8,216.20 : x
  2. Step 2: Convert to fraction form
    8,754.04/13,040.64 = 8,216.20/x
  3. Step 3: Cross multiply
    8,754.04x = 13,040.64 × 8,216.20
  4. Step 4: Simplify right side
    8,754.04x = 107,144,506.37
  5. Step 5: Solve for x
    x = 107,144,506.37/8,754.04
  6. Step 6: Final answer
    x = 12,239.44

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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.