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Finding the Fourth Proportional to 9,870.40, 14,805.60 and 9,481.60

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Solution

The fourth proportional to 9,870.40, 14,805.60 and 9,481.60 is: 14,222.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,870.40 : 14,805.60 = 9,481.60 : x
  2. Step 2: Convert to fraction form
    9,870.40/14,805.60 = 9,481.60/x
  3. Step 3: Cross multiply
    9,870.40x = 14,805.60 × 9,481.60
  4. Step 4: Simplify right side
    9,870.40x = 140,380,776.96
  5. Step 5: Solve for x
    x = 140,380,776.96/9,870.40
  6. Step 6: Final answer
    x = 14,222.40

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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.