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Finding the Fourth Proportional to 8,454.40, 12,662.40 and 4,998.40

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Solution

The fourth proportional to 8,454.40, 12,662.40 and 4,998.40 is: 7,486.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,454.40 : 12,662.40 = 4,998.40 : x
  2. Step 2: Convert to fraction form
    8,454.40/12,662.40 = 4,998.40/x
  3. Step 3: Cross multiply
    8,454.40x = 12,662.40 × 4,998.40
  4. Step 4: Simplify right side
    8,454.40x = 63,291,740.16
  5. Step 5: Solve for x
    x = 63,291,740.16/8,454.40
  6. Step 6: Final answer
    x = 7,486.25

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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.