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Finding the Fourth Proportional to 2,572.66, 3,550.26 and 1,393.70

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Solution

The fourth proportional to 2,572.66, 3,550.26 and 1,393.70 is: 1,923.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,572.66 : 3,550.26 = 1,393.70 : x
  2. Step 2: Convert to fraction form
    2,572.66/3,550.26 = 1,393.70/x
  3. Step 3: Cross multiply
    2,572.66x = 3,550.26 × 1,393.70
  4. Step 4: Simplify right side
    2,572.66x = 4,947,997.36
  5. Step 5: Solve for x
    x = 4,947,997.36/2,572.66
  6. Step 6: Final answer
    x = 1,923.30

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.