Home / 3,621.48-5,428-1,669.57

Finding the Fourth Proportional to 3,621.48, 5,428 and 1,669.57

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Solution

The fourth proportional to 3,621.48, 5,428 and 1,669.57 is: 2,502.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,621.48 : 5,428 = 1,669.57 : x
  2. Step 2: Convert to fraction form
    3,621.48/5,428 = 1,669.57/x
  3. Step 3: Cross multiply
    3,621.48x = 5,428 × 1,669.57
  4. Step 4: Simplify right side
    3,621.48x = 9,062,425.96
  5. Step 5: Solve for x
    x = 9,062,425.96/3,621.48
  6. Step 6: Final answer
    x = 2,502.41

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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.