Home / 3,875.78-5,348.61-2,107.39

Finding the Fourth Proportional to 3,875.78, 5,348.61 and 2,107.39

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Solution

The fourth proportional to 3,875.78, 5,348.61 and 2,107.39 is: 2,908.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,875.78 : 5,348.61 = 2,107.39 : x
  2. Step 2: Convert to fraction form
    3,875.78/5,348.61 = 2,107.39/x
  3. Step 3: Cross multiply
    3,875.78x = 5,348.61 × 2,107.39
  4. Step 4: Simplify right side
    3,875.78x = 11,271,607.23
  5. Step 5: Solve for x
    x = 11,271,607.23/3,875.78
  6. Step 6: Final answer
    x = 2,908.22

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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.