Home / 2,209.18-3,047.07-1,686.46

Finding the Fourth Proportional to 2,209.18, 3,047.07 and 1,686.46

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Solution

The fourth proportional to 2,209.18, 3,047.07 and 1,686.46 is: 2,326.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,209.18 : 3,047.07 = 1,686.46 : x
  2. Step 2: Convert to fraction form
    2,209.18/3,047.07 = 1,686.46/x
  3. Step 3: Cross multiply
    2,209.18x = 3,047.07 × 1,686.46
  4. Step 4: Simplify right side
    2,209.18x = 5,138,761.67
  5. Step 5: Solve for x
    x = 5,138,761.67/2,209.18
  6. Step 6: Final answer
    x = 2,326.09

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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.