Home / 1,638.08-2,261.28-1,327.04

Finding the Fourth Proportional to 1,638.08, 2,261.28 and 1,327.04

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Solution

The fourth proportional to 1,638.08, 2,261.28 and 1,327.04 is: 1,831.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,638.08 : 2,261.28 = 1,327.04 : x
  2. Step 2: Convert to fraction form
    1,638.08/2,261.28 = 1,327.04/x
  3. Step 3: Cross multiply
    1,638.08x = 2,261.28 × 1,327.04
  4. Step 4: Simplify right side
    1,638.08x = 3,000,809.01
  5. Step 5: Solve for x
    x = 3,000,809.01/1,638.08
  6. Step 6: Final answer
    x = 1,831.91

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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.