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Finding the Fourth Proportional to 8,400.20, 11,592.28 and 4,674.20

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Solution

The fourth proportional to 8,400.20, 11,592.28 and 4,674.20 is: 6,450.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,400.20 : 11,592.28 = 4,674.20 : x
  2. Step 2: Convert to fraction form
    8,400.20/11,592.28 = 4,674.20/x
  3. Step 3: Cross multiply
    8,400.20x = 11,592.28 × 4,674.20
  4. Step 4: Simplify right side
    8,400.20x = 54,184,635.18
  5. Step 5: Solve for x
    x = 54,184,635.18/8,400.20
  6. Step 6: Final answer
    x = 6,450.40

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Half scale
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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.