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Finding the Fourth Proportional to 2,999.76, 4,139.52 and 2,253.12

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Solution

The fourth proportional to 2,999.76, 4,139.52 and 2,253.12 is: 3,109.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,999.76 : 4,139.52 = 2,253.12 : x
  2. Step 2: Convert to fraction form
    2,999.76/4,139.52 = 2,253.12/x
  3. Step 3: Cross multiply
    2,999.76x = 4,139.52 × 2,253.12
  4. Step 4: Simplify right side
    2,999.76x = 9,326,835.30
  5. Step 5: Solve for x
    x = 9,326,835.30/2,999.76
  6. Step 6: Final answer
    x = 3,109.19

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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.