Home / 2,122.56-2,922.48-1,928.16

Finding the Fourth Proportional to 2,122.56, 2,922.48 and 1,928.16

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Solution

The fourth proportional to 2,122.56, 2,922.48 and 1,928.16 is: 2,654.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,122.56 : 2,922.48 = 1,928.16 : x
  2. Step 2: Convert to fraction form
    2,122.56/2,922.48 = 1,928.16/x
  3. Step 3: Cross multiply
    2,122.56x = 2,922.48 × 1,928.16
  4. Step 4: Simplify right side
    2,122.56x = 5,635,009.04
  5. Step 5: Solve for x
    x = 5,635,009.04/2,122.56
  6. Step 6: Final answer
    x = 2,654.82

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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.