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Finding the Fourth Proportional to 9,815.70, 14,720.96 and 4,267.79

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Solution

The fourth proportional to 9,815.70, 14,720.96 and 4,267.79 is: 6,400.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,815.70 : 14,720.96 = 4,267.79 : x
  2. Step 2: Convert to fraction form
    9,815.70/14,720.96 = 4,267.79/x
  3. Step 3: Cross multiply
    9,815.70x = 14,720.96 × 4,267.79
  4. Step 4: Simplify right side
    9,815.70x = 62,825,870.93
  5. Step 5: Solve for x
    x = 62,825,870.93/9,815.70
  6. Step 6: Final answer
    x = 6,400.55

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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.