Home / 2,208.96-3,045.15-1,543.75

Finding the Fourth Proportional to 2,208.96, 3,045.15 and 1,543.75

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Solution

The fourth proportional to 2,208.96, 3,045.15 and 1,543.75 is: 2,128.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,208.96 : 3,045.15 = 1,543.75 : x
  2. Step 2: Convert to fraction form
    2,208.96/3,045.15 = 1,543.75/x
  3. Step 3: Cross multiply
    2,208.96x = 3,045.15 × 1,543.75
  4. Step 4: Simplify right side
    2,208.96x = 4,700,935.09
  5. Step 5: Solve for x
    x = 4,700,935.09/2,208.96
  6. Step 6: Final answer
    x = 2,128.12

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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.