Home / 1,309.89-1,964.80-617.03

Finding the Fourth Proportional to 1,309.89, 1,964.80 and 617.03

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Solution

The fourth proportional to 1,309.89, 1,964.80 and 617.03 is: 925.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,309.89 : 1,964.80 = 617.03 : x
  2. Step 2: Convert to fraction form
    1,309.89/1,964.80 = 617.03/x
  3. Step 3: Cross multiply
    1,309.89x = 1,964.80 × 617.03
  4. Step 4: Simplify right side
    1,309.89x = 1,212,340.54
  5. Step 5: Solve for x
    x = 1,212,340.54/1,309.89
  6. Step 6: Final answer
    x = 925.53

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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.