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Finding the Fourth Proportional to 8,815.65, 13,220.34 and 2,574.05

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Solution

The fourth proportional to 8,815.65, 13,220.34 and 2,574.05 is: 3,860.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,815.65 : 13,220.34 = 2,574.05 : x
  2. Step 2: Convert to fraction form
    8,815.65/13,220.34 = 2,574.05/x
  3. Step 3: Cross multiply
    8,815.65x = 13,220.34 × 2,574.05
  4. Step 4: Simplify right side
    8,815.65x = 34,029,816.18
  5. Step 5: Solve for x
    x = 34,029,816.18/8,815.65
  6. Step 6: Final answer
    x = 3,860.16

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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.