Home / 2,690.16-3,711.29-1,806.23

Finding the Fourth Proportional to 2,690.16, 3,711.29 and 1,806.23

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Solution

The fourth proportional to 2,690.16, 3,711.29 and 1,806.23 is: 2,491.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,690.16 : 3,711.29 = 1,806.23 : x
  2. Step 2: Convert to fraction form
    2,690.16/3,711.29 = 1,806.23/x
  3. Step 3: Cross multiply
    2,690.16x = 3,711.29 × 1,806.23
  4. Step 4: Simplify right side
    2,690.16x = 6,703,415.75
  5. Step 5: Solve for x
    x = 6,703,415.75/2,690.16
  6. Step 6: Final answer
    x = 2,491.83

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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.