Home / 1,921.94-2,652.48-1,176.40

Finding the Fourth Proportional to 1,921.94, 2,652.48 and 1,176.40

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Solution

The fourth proportional to 1,921.94, 2,652.48 and 1,176.40 is: 1,623.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,921.94 : 2,652.48 = 1,176.40 : x
  2. Step 2: Convert to fraction form
    1,921.94/2,652.48 = 1,176.40/x
  3. Step 3: Cross multiply
    1,921.94x = 2,652.48 × 1,176.40
  4. Step 4: Simplify right side
    1,921.94x = 3,120,370.84
  5. Step 5: Solve for x
    x = 3,120,370.84/1,921.94
  6. Step 6: Final answer
    x = 1,623.55

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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.