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Finding the Fourth Proportional to 9,809.15, 14,713.05 and 3,145.55

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Solution

The fourth proportional to 9,809.15, 14,713.05 and 3,145.55 is: 4,718.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,809.15 : 14,713.05 = 3,145.55 : x
  2. Step 2: Convert to fraction form
    9,809.15/14,713.05 = 3,145.55/x
  3. Step 3: Cross multiply
    9,809.15x = 14,713.05 × 3,145.55
  4. Step 4: Simplify right side
    9,809.15x = 46,280,634.43
  5. Step 5: Solve for x
    x = 46,280,634.43/9,809.15
  6. Step 6: Final answer
    x = 4,718.11

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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.