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Finding the Fourth Proportional to 1,625.60, 2,238.60 and 1,412.81

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Solution

The fourth proportional to 1,625.60, 2,238.60 and 1,412.81 is: 1,945.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,625.60 : 2,238.60 = 1,412.81 : x
  2. Step 2: Convert to fraction form
    1,625.60/2,238.60 = 1,412.81/x
  3. Step 3: Cross multiply
    1,625.60x = 2,238.60 × 1,412.81
  4. Step 4: Simplify right side
    1,625.60x = 3,162,716.47
  5. Step 5: Solve for x
    x = 3,162,716.47/1,625.60
  6. Step 6: Final answer
    x = 1,945.57

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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.