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Finding the Fourth Proportional to 1,719.70, 2,584.08 and 940.20

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Solution

The fourth proportional to 1,719.70, 2,584.08 and 940.20 is: 1,412.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,719.70 : 2,584.08 = 940.20 : x
  2. Step 2: Convert to fraction form
    1,719.70/2,584.08 = 940.20/x
  3. Step 3: Cross multiply
    1,719.70x = 2,584.08 × 940.20
  4. Step 4: Simplify right side
    1,719.70x = 2,429,552.02
  5. Step 5: Solve for x
    x = 2,429,552.02/1,719.70
  6. Step 6: Final answer
    x = 1,412.78

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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.