Home / 2,656.49-3,666.58-1,538.09

Finding the Fourth Proportional to 2,656.49, 3,666.58 and 1,538.09

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Solution

The fourth proportional to 2,656.49, 3,666.58 and 1,538.09 is: 2,122.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,656.49 : 3,666.58 = 1,538.09 : x
  2. Step 2: Convert to fraction form
    2,656.49/3,666.58 = 1,538.09/x
  3. Step 3: Cross multiply
    2,656.49x = 3,666.58 × 1,538.09
  4. Step 4: Simplify right side
    2,656.49x = 5,639,504.01
  5. Step 5: Solve for x
    x = 5,639,504.01/2,656.49
  6. Step 6: Final answer
    x = 2,122.92

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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.