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Finding the Fourth Proportional to 1,721.05, 2,576.10 and 898.20

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Solution

The fourth proportional to 1,721.05, 2,576.10 and 898.20 is: 1,344.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,721.05 : 2,576.10 = 898.20 : x
  2. Step 2: Convert to fraction form
    1,721.05/2,576.10 = 898.20/x
  3. Step 3: Cross multiply
    1,721.05x = 2,576.10 × 898.20
  4. Step 4: Simplify right side
    1,721.05x = 2,313,853.02
  5. Step 5: Solve for x
    x = 2,313,853.02/1,721.05
  6. Step 6: Final answer
    x = 1,344.44

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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.