Home / 3,638.88-5,457.44-1,690.08

Finding the Fourth Proportional to 3,638.88, 5,457.44 and 1,690.08

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Solution

The fourth proportional to 3,638.88, 5,457.44 and 1,690.08 is: 2,534.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,638.88 : 5,457.44 = 1,690.08 : x
  2. Step 2: Convert to fraction form
    3,638.88/5,457.44 = 1,690.08/x
  3. Step 3: Cross multiply
    3,638.88x = 5,457.44 × 1,690.08
  4. Step 4: Simplify right side
    3,638.88x = 9,223,510.20
  5. Step 5: Solve for x
    x = 9,223,510.20/3,638.88
  6. Step 6: Final answer
    x = 2,534.71

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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.