Home / 7,128.19-10,691.27-2,448.11

Finding the Fourth Proportional to 7,128.19, 10,691.27 and 2,448.11

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Solution

The fourth proportional to 7,128.19, 10,691.27 and 2,448.11 is: 3,671.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,128.19 : 10,691.27 = 2,448.11 : x
  2. Step 2: Convert to fraction form
    7,128.19/10,691.27 = 2,448.11/x
  3. Step 3: Cross multiply
    7,128.19x = 10,691.27 × 2,448.11
  4. Step 4: Simplify right side
    7,128.19x = 26,173,405.00
  5. Step 5: Solve for x
    x = 26,173,405.00/7,128.19
  6. Step 6: Final answer
    x = 3,671.82

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.