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Finding the Fourth Proportional to 1,807.70, 2,711.01 and 1,443.20

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Solution

The fourth proportional to 1,807.70, 2,711.01 and 1,443.20 is: 2,164.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,807.70 : 2,711.01 = 1,443.20 : x
  2. Step 2: Convert to fraction form
    1,807.70/2,711.01 = 1,443.20/x
  3. Step 3: Cross multiply
    1,807.70x = 2,711.01 × 1,443.20
  4. Step 4: Simplify right side
    1,807.70x = 3,912,529.63
  5. Step 5: Solve for x
    x = 3,912,529.63/1,807.70
  6. Step 6: Final answer
    x = 2,164.37

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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.