Home / 2,845.13-3,922.53-2,487.81

Finding the Fourth Proportional to 2,845.13, 3,922.53 and 2,487.81

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Solution

The fourth proportional to 2,845.13, 3,922.53 and 2,487.81 is: 3,429.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,845.13 : 3,922.53 = 2,487.81 : x
  2. Step 2: Convert to fraction form
    2,845.13/3,922.53 = 2,487.81/x
  3. Step 3: Cross multiply
    2,845.13x = 3,922.53 × 2,487.81
  4. Step 4: Simplify right side
    2,845.13x = 9,758,514.74
  5. Step 5: Solve for x
    x = 9,758,514.74/2,845.13
  6. Step 6: Final answer
    x = 3,429.91

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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.