Home / 1,921.69-2,652.14-1,176.15

Finding the Fourth Proportional to 1,921.69, 2,652.14 and 1,176.15

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Solution

The fourth proportional to 1,921.69, 2,652.14 and 1,176.15 is: 1,623.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,921.69 : 2,652.14 = 1,176.15 : x
  2. Step 2: Convert to fraction form
    1,921.69/2,652.14 = 1,176.15/x
  3. Step 3: Cross multiply
    1,921.69x = 2,652.14 × 1,176.15
  4. Step 4: Simplify right side
    1,921.69x = 3,119,301.95
  5. Step 5: Solve for x
    x = 3,119,301.95/1,921.69
  6. Step 6: Final answer
    x = 1,623.21

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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.