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Finding the Fourth Proportional to 1,764.70, 2,644.65 and 1,440.70

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Solution

The fourth proportional to 1,764.70, 2,644.65 and 1,440.70 is: 2,159.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,764.70 : 2,644.65 = 1,440.70 : x
  2. Step 2: Convert to fraction form
    1,764.70/2,644.65 = 1,440.70/x
  3. Step 3: Cross multiply
    1,764.70x = 2,644.65 × 1,440.70
  4. Step 4: Simplify right side
    1,764.70x = 3,810,147.26
  5. Step 5: Solve for x
    x = 3,810,147.26/1,764.70
  6. Step 6: Final answer
    x = 2,159.09

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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.