Home / 1,325.17-1,987.80-351.37

Finding the Fourth Proportional to 1,325.17, 1,987.80 and 351.37

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Solution

The fourth proportional to 1,325.17, 1,987.80 and 351.37 is: 527.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,325.17 : 1,987.80 = 351.37 : x
  2. Step 2: Convert to fraction form
    1,325.17/1,987.80 = 351.37/x
  3. Step 3: Cross multiply
    1,325.17x = 1,987.80 × 351.37
  4. Step 4: Simplify right side
    1,325.17x = 698,453.29
  5. Step 5: Solve for x
    x = 698,453.29/1,325.17
  6. Step 6: Final answer
    x = 527.07

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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.