Home / 2,860.01-3,946.20-1,680.65

Finding the Fourth Proportional to 2,860.01, 3,946.20 and 1,680.65

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Solution

The fourth proportional to 2,860.01, 3,946.20 and 1,680.65 is: 2,318.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,860.01 : 3,946.20 = 1,680.65 : x
  2. Step 2: Convert to fraction form
    2,860.01/3,946.20 = 1,680.65/x
  3. Step 3: Cross multiply
    2,860.01x = 3,946.20 × 1,680.65
  4. Step 4: Simplify right side
    2,860.01x = 6,632,161.30
  5. Step 5: Solve for x
    x = 6,632,161.30/2,860.01
  6. Step 6: Final answer
    x = 2,318.93

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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.