Home / 3,110.35-4,292.04-1,931.20

Finding the Fourth Proportional to 3,110.35, 4,292.04 and 1,931.20

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Solution

The fourth proportional to 3,110.35, 4,292.04 and 1,931.20 is: 2,664.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,110.35 : 4,292.04 = 1,931.20 : x
  2. Step 2: Convert to fraction form
    3,110.35/4,292.04 = 1,931.20/x
  3. Step 3: Cross multiply
    3,110.35x = 4,292.04 × 1,931.20
  4. Step 4: Simplify right side
    3,110.35x = 8,288,787.65
  5. Step 5: Solve for x
    x = 8,288,787.65/3,110.35
  6. Step 6: Final answer
    x = 2,664.91

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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.