Home / 1,608.16-2,219.28-945.76

Finding the Fourth Proportional to 1,608.16, 2,219.28 and 945.76

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Solution

The fourth proportional to 1,608.16, 2,219.28 and 945.76 is: 1,305.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,608.16 : 2,219.28 = 945.76 : x
  2. Step 2: Convert to fraction form
    1,608.16/2,219.28 = 945.76/x
  3. Step 3: Cross multiply
    1,608.16x = 2,219.28 × 945.76
  4. Step 4: Simplify right side
    1,608.16x = 2,098,906.25
  5. Step 5: Solve for x
    x = 2,098,906.25/1,608.16
  6. Step 6: Final answer
    x = 1,305.16

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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.