Home / 3,873.60-5,345.51-2,105.24

Finding the Fourth Proportional to 3,873.60, 5,345.51 and 2,105.24

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Solution

The fourth proportional to 3,873.60, 5,345.51 and 2,105.24 is: 2,905.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,873.60 : 5,345.51 = 2,105.24 : x
  2. Step 2: Convert to fraction form
    3,873.60/5,345.51 = 2,105.24/x
  3. Step 3: Cross multiply
    3,873.60x = 5,345.51 × 2,105.24
  4. Step 4: Simplify right side
    3,873.60x = 11,253,544.22
  5. Step 5: Solve for x
    x = 11,253,544.22/3,873.60
  6. Step 6: Final answer
    x = 2,905.19

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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.