Home / 2,191.54-3,287.32-1,421.50

Finding the Fourth Proportional to 2,191.54, 3,287.32 and 1,421.50

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Solution

The fourth proportional to 2,191.54, 3,287.32 and 1,421.50 is: 2,132.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,191.54 : 3,287.32 = 1,421.50 : x
  2. Step 2: Convert to fraction form
    2,191.54/3,287.32 = 1,421.50/x
  3. Step 3: Cross multiply
    2,191.54x = 3,287.32 × 1,421.50
  4. Step 4: Simplify right side
    2,191.54x = 4,672,925.38
  5. Step 5: Solve for x
    x = 4,672,925.38/2,191.54
  6. Step 6: Final answer
    x = 2,132.26

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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.