Home / 3,642.10-5,455.95-1,995.70

Finding the Fourth Proportional to 3,642.10, 5,455.95 and 1,995.70

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Solution

The fourth proportional to 3,642.10, 5,455.95 and 1,995.70 is: 2,989.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,642.10 : 5,455.95 = 1,995.70 : x
  2. Step 2: Convert to fraction form
    3,642.10/5,455.95 = 1,995.70/x
  3. Step 3: Cross multiply
    3,642.10x = 5,455.95 × 1,995.70
  4. Step 4: Simplify right side
    3,642.10x = 10,888,439.42
  5. Step 5: Solve for x
    x = 10,888,439.42/3,642.10
  6. Step 6: Final answer
    x = 2,989.60

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.