Home / 2,421.71-3,632.86-1,189.16

Finding the Fourth Proportional to 2,421.71, 3,632.86 and 1,189.16

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Solution

The fourth proportional to 2,421.71, 3,632.86 and 1,189.16 is: 1,783.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,421.71 : 3,632.86 = 1,189.16 : x
  2. Step 2: Convert to fraction form
    2,421.71/3,632.86 = 1,189.16/x
  3. Step 3: Cross multiply
    2,421.71x = 3,632.86 × 1,189.16
  4. Step 4: Simplify right side
    2,421.71x = 4,320,033.63
  5. Step 5: Solve for x
    x = 4,320,033.63/2,421.71
  6. Step 6: Final answer
    x = 1,783.88

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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.