Home / 7,985.40-11,020.19-4,448.61

Finding the Fourth Proportional to 7,985.40, 11,020.19 and 4,448.61

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Solution

The fourth proportional to 7,985.40, 11,020.19 and 4,448.61 is: 6,139.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,985.40 : 11,020.19 = 4,448.61 : x
  2. Step 2: Convert to fraction form
    7,985.40/11,020.19 = 4,448.61/x
  3. Step 3: Cross multiply
    7,985.40x = 11,020.19 × 4,448.61
  4. Step 4: Simplify right side
    7,985.40x = 49,024,505.19
  5. Step 5: Solve for x
    x = 49,024,505.19/7,985.40
  6. Step 6: Final answer
    x = 6,139.27

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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.