Home / 3,618.95-5,428.37-1,021.88

Finding the Fourth Proportional to 3,618.95, 5,428.37 and 1,021.88

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Solution

The fourth proportional to 3,618.95, 5,428.37 and 1,021.88 is: 1,532.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,618.95 : 5,428.37 = 1,021.88 : x
  2. Step 2: Convert to fraction form
    3,618.95/5,428.37 = 1,021.88/x
  3. Step 3: Cross multiply
    3,618.95x = 5,428.37 × 1,021.88
  4. Step 4: Simplify right side
    3,618.95x = 5,547,110.48
  5. Step 5: Solve for x
    x = 5,547,110.48/3,618.95
  6. Step 6: Final answer
    x = 1,532.80

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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.