Home / 2,207.17-3,045.90-1,212.45

Finding the Fourth Proportional to 2,207.17, 3,045.90 and 1,212.45

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Solution

The fourth proportional to 2,207.17, 3,045.90 and 1,212.45 is: 1,673.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,207.17 : 3,045.90 = 1,212.45 : x
  2. Step 2: Convert to fraction form
    2,207.17/3,045.90 = 1,212.45/x
  3. Step 3: Cross multiply
    2,207.17x = 3,045.90 × 1,212.45
  4. Step 4: Simplify right side
    2,207.17x = 3,693,001.46
  5. Step 5: Solve for x
    x = 3,693,001.46/2,207.17
  6. Step 6: Final answer
    x = 1,673.18

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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.