Home / 1,057.36-1,458.88-609.12

Finding the Fourth Proportional to 1,057.36, 1,458.88 and 609.12

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Solution

The fourth proportional to 1,057.36, 1,458.88 and 609.12 is: 840.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,057.36 : 1,458.88 = 609.12 : x
  2. Step 2: Convert to fraction form
    1,057.36/1,458.88 = 609.12/x
  3. Step 3: Cross multiply
    1,057.36x = 1,458.88 × 609.12
  4. Step 4: Simplify right side
    1,057.36x = 888,632.99
  5. Step 5: Solve for x
    x = 888,632.99/1,057.36
  6. Step 6: Final answer
    x = 840.43

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.