Home / 2,155.01-3,232.51-1,390.37

Finding the Fourth Proportional to 2,155.01, 3,232.51 and 1,390.37

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Solution

The fourth proportional to 2,155.01, 3,232.51 and 1,390.37 is: 2,085.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,155.01 : 3,232.51 = 1,390.37 : x
  2. Step 2: Convert to fraction form
    2,155.01/3,232.51 = 1,390.37/x
  3. Step 3: Cross multiply
    2,155.01x = 3,232.51 × 1,390.37
  4. Step 4: Simplify right side
    2,155.01x = 4,494,365.29
  5. Step 5: Solve for x
    x = 4,494,365.29/2,155.01
  6. Step 6: Final answer
    x = 2,085.55

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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.