Home / 1,921.06-2,650.98-1,176.28

Finding the Fourth Proportional to 1,921.06, 2,650.98 and 1,176.28

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Solution

The fourth proportional to 1,921.06, 2,650.98 and 1,176.28 is: 1,623.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,921.06 : 2,650.98 = 1,176.28 : x
  2. Step 2: Convert to fraction form
    1,921.06/2,650.98 = 1,176.28/x
  3. Step 3: Cross multiply
    1,921.06x = 2,650.98 × 1,176.28
  4. Step 4: Simplify right side
    1,921.06x = 3,118,294.75
  5. Step 5: Solve for x
    x = 3,118,294.75/1,921.06
  6. Step 6: Final answer
    x = 1,623.22

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1.5x scale

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.