Home / 2,201.53-3,038.45-1,405.20

Finding the Fourth Proportional to 2,201.53, 3,038.45 and 1,405.20

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Solution

The fourth proportional to 2,201.53, 3,038.45 and 1,405.20 is: 1,939.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,201.53 : 3,038.45 = 1,405.20 : x
  2. Step 2: Convert to fraction form
    2,201.53/3,038.45 = 1,405.20/x
  3. Step 3: Cross multiply
    2,201.53x = 3,038.45 × 1,405.20
  4. Step 4: Simplify right side
    2,201.53x = 4,269,607.72
  5. Step 5: Solve for x
    x = 4,269,607.72/2,201.53
  6. Step 6: Final answer
    x = 1,939.38

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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.