Home / 2,207.36-3,039.48-2,158.76

Finding the Fourth Proportional to 2,207.36, 3,039.48 and 2,158.76

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Solution

The fourth proportional to 2,207.36, 3,039.48 and 2,158.76 is: 2,972.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,207.36 : 3,039.48 = 2,158.76 : x
  2. Step 2: Convert to fraction form
    2,207.36/3,039.48 = 2,158.76/x
  3. Step 3: Cross multiply
    2,207.36x = 3,039.48 × 2,158.76
  4. Step 4: Simplify right side
    2,207.36x = 6,561,507.84
  5. Step 5: Solve for x
    x = 6,561,507.84/2,207.36
  6. Step 6: Final answer
    x = 2,972.56

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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.