Home / 2,187.31-3,283.40-2,153.29

Finding the Fourth Proportional to 2,187.31, 3,283.40 and 2,153.29

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Solution

The fourth proportional to 2,187.31, 3,283.40 and 2,153.29 is: 3,232.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,187.31 : 3,283.40 = 2,153.29 : x
  2. Step 2: Convert to fraction form
    2,187.31/3,283.40 = 2,153.29/x
  3. Step 3: Cross multiply
    2,187.31x = 3,283.40 × 2,153.29
  4. Step 4: Simplify right side
    2,187.31x = 7,070,112.39
  5. Step 5: Solve for x
    x = 7,070,112.39/2,187.31
  6. Step 6: Final answer
    x = 3,232.33

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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.