Home / 3,905.52-5,388.76-2,646.80

Finding the Fourth Proportional to 3,905.52, 5,388.76 and 2,646.80

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Solution

The fourth proportional to 3,905.52, 5,388.76 and 2,646.80 is: 3,652.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,905.52 : 5,388.76 = 2,646.80 : x
  2. Step 2: Convert to fraction form
    3,905.52/5,388.76 = 2,646.80/x
  3. Step 3: Cross multiply
    3,905.52x = 5,388.76 × 2,646.80
  4. Step 4: Simplify right side
    3,905.52x = 14,262,969.97
  5. Step 5: Solve for x
    x = 14,262,969.97/3,905.52
  6. Step 6: Final answer
    x = 3,652.00

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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.