Home / 2,010.72-2,772.96-1,538.64

Finding the Fourth Proportional to 2,010.72, 2,772.96 and 1,538.64

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Solution

The fourth proportional to 2,010.72, 2,772.96 and 1,538.64 is: 2,121.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,010.72 : 2,772.96 = 1,538.64 : x
  2. Step 2: Convert to fraction form
    2,010.72/2,772.96 = 1,538.64/x
  3. Step 3: Cross multiply
    2,010.72x = 2,772.96 × 1,538.64
  4. Step 4: Simplify right side
    2,010.72x = 4,266,587.17
  5. Step 5: Solve for x
    x = 4,266,587.17/2,010.72
  6. Step 6: Final answer
    x = 2,121.92

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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.