Home / 1,638.32-2,259.84-1,244.48

Finding the Fourth Proportional to 1,638.32, 2,259.84 and 1,244.48

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Solution

The fourth proportional to 1,638.32, 2,259.84 and 1,244.48 is: 1,716.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,638.32 : 2,259.84 = 1,244.48 : x
  2. Step 2: Convert to fraction form
    1,638.32/2,259.84 = 1,244.48/x
  3. Step 3: Cross multiply
    1,638.32x = 2,259.84 × 1,244.48
  4. Step 4: Simplify right side
    1,638.32x = 2,812,325.68
  5. Step 5: Solve for x
    x = 2,812,325.68/1,638.32
  6. Step 6: Final answer
    x = 1,716.59

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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.