Home / 2,201.53-3,038.02-1,206.78

Finding the Fourth Proportional to 2,201.53, 3,038.02 and 1,206.78

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Solution

The fourth proportional to 2,201.53, 3,038.02 and 1,206.78 is: 1,665.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,201.53 : 3,038.02 = 1,206.78 : x
  2. Step 2: Convert to fraction form
    2,201.53/3,038.02 = 1,206.78/x
  3. Step 3: Cross multiply
    2,201.53x = 3,038.02 × 1,206.78
  4. Step 4: Simplify right side
    2,201.53x = 3,666,215.74
  5. Step 5: Solve for x
    x = 3,666,215.74/2,201.53
  6. Step 6: Final answer
    x = 1,665.30

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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.