Home / 3,875.90-5,348.80-2,107.54

Finding the Fourth Proportional to 3,875.90, 5,348.80 and 2,107.54

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Solution

The fourth proportional to 3,875.90, 5,348.80 and 2,107.54 is: 2,908.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,875.90 : 5,348.80 = 2,107.54 : x
  2. Step 2: Convert to fraction form
    3,875.90/5,348.80 = 2,107.54/x
  3. Step 3: Cross multiply
    3,875.90x = 5,348.80 × 2,107.54
  4. Step 4: Simplify right side
    3,875.90x = 11,272,809.95
  5. Step 5: Solve for x
    x = 11,272,809.95/3,875.90
  6. Step 6: Final answer
    x = 2,908.44

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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.