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Finding the Fourth Proportional to 8,889.63, 13,335.21 and 2,315.83

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Solution

The fourth proportional to 8,889.63, 13,335.21 and 2,315.83 is: 3,473.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,889.63 : 13,335.21 = 2,315.83 : x
  2. Step 2: Convert to fraction form
    8,889.63/13,335.21 = 2,315.83/x
  3. Step 3: Cross multiply
    8,889.63x = 13,335.21 × 2,315.83
  4. Step 4: Simplify right side
    8,889.63x = 30,882,079.37
  5. Step 5: Solve for x
    x = 30,882,079.37/8,889.63
  6. Step 6: Final answer
    x = 3,473.94

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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.