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Finding the Fourth Proportional to 9,274.80, 13,928.40 and 8,983.20

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Solution

The fourth proportional to 9,274.80, 13,928.40 and 8,983.20 is: 13,490.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,274.80 : 13,928.40 = 8,983.20 : x
  2. Step 2: Convert to fraction form
    9,274.80/13,928.40 = 8,983.20/x
  3. Step 3: Cross multiply
    9,274.80x = 13,928.40 × 8,983.20
  4. Step 4: Simplify right side
    9,274.80x = 125,121,602.88
  5. Step 5: Solve for x
    x = 125,121,602.88/9,274.80
  6. Step 6: Final answer
    x = 13,490.49

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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.