Home / 1,809.10-2,719.45-1,680.70

Finding the Fourth Proportional to 1,809.10, 2,719.45 and 1,680.70

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Solution

The fourth proportional to 1,809.10, 2,719.45 and 1,680.70 is: 2,526.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,809.10 : 2,719.45 = 1,680.70 : x
  2. Step 2: Convert to fraction form
    1,809.10/2,719.45 = 1,680.70/x
  3. Step 3: Cross multiply
    1,809.10x = 2,719.45 × 1,680.70
  4. Step 4: Simplify right side
    1,809.10x = 4,570,579.62
  5. Step 5: Solve for x
    x = 4,570,579.62/1,809.10
  6. Step 6: Final answer
    x = 2,526.44

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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.