Home / 1,325.17-1,987.91-351.28

Finding the Fourth Proportional to 1,325.17, 1,987.91 and 351.28

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Solution

The fourth proportional to 1,325.17, 1,987.91 and 351.28 is: 526.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,325.17 : 1,987.91 = 351.28 : x
  2. Step 2: Convert to fraction form
    1,325.17/1,987.91 = 351.28/x
  3. Step 3: Cross multiply
    1,325.17x = 1,987.91 × 351.28
  4. Step 4: Simplify right side
    1,325.17x = 698,313.02
  5. Step 5: Solve for x
    x = 698,313.02/1,325.17
  6. Step 6: Final answer
    x = 526.96

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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.