Home / 3,618.98-5,428.71-1,538.75

Finding the Fourth Proportional to 3,618.98, 5,428.71 and 1,538.75

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Solution

The fourth proportional to 3,618.98, 5,428.71 and 1,538.75 is: 2,308.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,618.98 : 5,428.71 = 1,538.75 : x
  2. Step 2: Convert to fraction form
    3,618.98/5,428.71 = 1,538.75/x
  3. Step 3: Cross multiply
    3,618.98x = 5,428.71 × 1,538.75
  4. Step 4: Simplify right side
    3,618.98x = 8,353,400.37
  5. Step 5: Solve for x
    x = 8,353,400.37/3,618.98
  6. Step 6: Final answer
    x = 2,308.22

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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.