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Finding the Fourth Proportional to 2,999.57, 4,139.26 and 1,655.22

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Solution

The fourth proportional to 2,999.57, 4,139.26 and 1,655.22 is: 2,284.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,999.57 : 4,139.26 = 1,655.22 : x
  2. Step 2: Convert to fraction form
    2,999.57/4,139.26 = 1,655.22/x
  3. Step 3: Cross multiply
    2,999.57x = 4,139.26 × 1,655.22
  4. Step 4: Simplify right side
    2,999.57x = 6,851,385.94
  5. Step 5: Solve for x
    x = 6,851,385.94/2,999.57
  6. Step 6: Final answer
    x = 2,284.12

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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.