Home / 1,352.23-2,028.51-427.61

Finding the Fourth Proportional to 1,352.23, 2,028.51 and 427.61

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Solution

The fourth proportional to 1,352.23, 2,028.51 and 427.61 is: 641.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,352.23 : 2,028.51 = 427.61 : x
  2. Step 2: Convert to fraction form
    1,352.23/2,028.51 = 427.61/x
  3. Step 3: Cross multiply
    1,352.23x = 2,028.51 × 427.61
  4. Step 4: Simplify right side
    1,352.23x = 867,416.23
  5. Step 5: Solve for x
    x = 867,416.23/1,352.23
  6. Step 6: Final answer
    x = 641.47

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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.