Home / 2,690.23-3,712.40-1,511.27

Finding the Fourth Proportional to 2,690.23, 3,712.40 and 1,511.27

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Solution

The fourth proportional to 2,690.23, 3,712.40 and 1,511.27 is: 2,085.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,690.23 : 3,712.40 = 1,511.27 : x
  2. Step 2: Convert to fraction form
    2,690.23/3,712.40 = 1,511.27/x
  3. Step 3: Cross multiply
    2,690.23x = 3,712.40 × 1,511.27
  4. Step 4: Simplify right side
    2,690.23x = 5,610,438.75
  5. Step 5: Solve for x
    x = 5,610,438.75/2,690.23
  6. Step 6: Final answer
    x = 2,085.49

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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.