Home / 2,685.42-3,706.38-1,690.02

Finding the Fourth Proportional to 2,685.42, 3,706.38 and 1,690.02

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Solution

The fourth proportional to 2,685.42, 3,706.38 and 1,690.02 is: 2,332.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,685.42 : 3,706.38 = 1,690.02 : x
  2. Step 2: Convert to fraction form
    2,685.42/3,706.38 = 1,690.02/x
  3. Step 3: Cross multiply
    2,685.42x = 3,706.38 × 1,690.02
  4. Step 4: Simplify right side
    2,685.42x = 6,263,856.33
  5. Step 5: Solve for x
    x = 6,263,856.33/2,685.42
  6. Step 6: Final answer
    x = 2,332.54

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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.