Home / 2,101.68-2,899.40-1,629.72

Finding the Fourth Proportional to 2,101.68, 2,899.40 and 1,629.72

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Solution

The fourth proportional to 2,101.68, 2,899.40 and 1,629.72 is: 2,248.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,101.68 : 2,899.40 = 1,629.72 : x
  2. Step 2: Convert to fraction form
    2,101.68/2,899.40 = 1,629.72/x
  3. Step 3: Cross multiply
    2,101.68x = 2,899.40 × 1,629.72
  4. Step 4: Simplify right side
    2,101.68x = 4,725,202.02
  5. Step 5: Solve for x
    x = 4,725,202.02/2,101.68
  6. Step 6: Final answer
    x = 2,248.30

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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.