Home / 3,631.24-5,005.02-2,780.20

Finding the Fourth Proportional to 3,631.24, 5,005.02 and 2,780.20

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Solution

The fourth proportional to 3,631.24, 5,005.02 and 2,780.20 is: 3,832.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,631.24 : 5,005.02 = 2,780.20 : x
  2. Step 2: Convert to fraction form
    3,631.24/5,005.02 = 2,780.20/x
  3. Step 3: Cross multiply
    3,631.24x = 5,005.02 × 2,780.20
  4. Step 4: Simplify right side
    3,631.24x = 13,914,956.60
  5. Step 5: Solve for x
    x = 13,914,956.60/3,631.24
  6. Step 6: Final answer
    x = 3,832.01

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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.