Home / 2,215.40-3,325.28-1,690.52

Finding the Fourth Proportional to 2,215.40, 3,325.28 and 1,690.52

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Solution

The fourth proportional to 2,215.40, 3,325.28 and 1,690.52 is: 2,537.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,215.40 : 3,325.28 = 1,690.52 : x
  2. Step 2: Convert to fraction form
    2,215.40/3,325.28 = 1,690.52/x
  3. Step 3: Cross multiply
    2,215.40x = 3,325.28 × 1,690.52
  4. Step 4: Simplify right side
    2,215.40x = 5,621,452.35
  5. Step 5: Solve for x
    x = 5,621,452.35/2,215.40
  6. Step 6: Final answer
    x = 2,537.44

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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.