Home / 1,351.31-2,025.60-528.45

Finding the Fourth Proportional to 1,351.31, 2,025.60 and 528.45

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Solution

The fourth proportional to 1,351.31, 2,025.60 and 528.45 is: 792.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,351.31 : 2,025.60 = 528.45 : x
  2. Step 2: Convert to fraction form
    1,351.31/2,025.60 = 528.45/x
  3. Step 3: Cross multiply
    1,351.31x = 2,025.60 × 528.45
  4. Step 4: Simplify right side
    1,351.31x = 1,070,428.32
  5. Step 5: Solve for x
    x = 1,070,428.32/1,351.31
  6. Step 6: Final answer
    x = 792.14

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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.