Home / 3,106.62-4,287.20-1,690.34

Finding the Fourth Proportional to 3,106.62, 4,287.20 and 1,690.34

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Solution

The fourth proportional to 3,106.62, 4,287.20 and 1,690.34 is: 2,332.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,106.62 : 4,287.20 = 1,690.34 : x
  2. Step 2: Convert to fraction form
    3,106.62/4,287.20 = 1,690.34/x
  3. Step 3: Cross multiply
    3,106.62x = 4,287.20 × 1,690.34
  4. Step 4: Simplify right side
    3,106.62x = 7,246,795.76
  5. Step 5: Solve for x
    x = 7,246,795.76/3,106.62
  6. Step 6: Final answer
    x = 2,332.69

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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.