Home / 2,270.88-3,133.68-1,681.20

Finding the Fourth Proportional to 2,270.88, 3,133.68 and 1,681.20

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Solution

The fourth proportional to 2,270.88, 3,133.68 and 1,681.20 is: 2,319.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,270.88 : 3,133.68 = 1,681.20 : x
  2. Step 2: Convert to fraction form
    2,270.88/3,133.68 = 1,681.20/x
  3. Step 3: Cross multiply
    2,270.88x = 3,133.68 × 1,681.20
  4. Step 4: Simplify right side
    2,270.88x = 5,268,342.82
  5. Step 5: Solve for x
    x = 5,268,342.82/2,270.88
  6. Step 6: Final answer
    x = 2,319.96

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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.