Home / 1,812.45-2,712.60-1,666.65

Finding the Fourth Proportional to 1,812.45, 2,712.60 and 1,666.65

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Solution

The fourth proportional to 1,812.45, 2,712.60 and 1,666.65 is: 2,494.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,812.45 : 2,712.60 = 1,666.65 : x
  2. Step 2: Convert to fraction form
    1,812.45/2,712.60 = 1,666.65/x
  3. Step 3: Cross multiply
    1,812.45x = 2,712.60 × 1,666.65
  4. Step 4: Simplify right side
    1,812.45x = 4,520,954.79
  5. Step 5: Solve for x
    x = 4,520,954.79/1,812.45
  6. Step 6: Final answer
    x = 2,494.39

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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.