Home / 3,798.65-5,241.66-2,120.15

Finding the Fourth Proportional to 3,798.65, 5,241.66 and 2,120.15

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Solution

The fourth proportional to 3,798.65, 5,241.66 and 2,120.15 is: 2,925.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,798.65 : 5,241.66 = 2,120.15 : x
  2. Step 2: Convert to fraction form
    3,798.65/5,241.66 = 2,120.15/x
  3. Step 3: Cross multiply
    3,798.65x = 5,241.66 × 2,120.15
  4. Step 4: Simplify right side
    3,798.65x = 11,113,079.24
  5. Step 5: Solve for x
    x = 11,113,079.24/3,798.65
  6. Step 6: Final answer
    x = 2,925.54

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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.