Home / 2,690.90-3,713.03-1,511.74

Finding the Fourth Proportional to 2,690.90, 3,713.03 and 1,511.74

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Solution

The fourth proportional to 2,690.90, 3,713.03 and 1,511.74 is: 2,085.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,690.90 : 3,713.03 = 1,511.74 : x
  2. Step 2: Convert to fraction form
    2,690.90/3,713.03 = 1,511.74/x
  3. Step 3: Cross multiply
    2,690.90x = 3,713.03 × 1,511.74
  4. Step 4: Simplify right side
    2,690.90x = 5,613,138.72
  5. Step 5: Solve for x
    x = 5,613,138.72/2,690.90
  6. Step 6: Final answer
    x = 2,085.97

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1.5x scale

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.