Home / 7,990.40-11,026.72-4,453.92

Finding the Fourth Proportional to 7,990.40, 11,026.72 and 4,453.92

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Solution

The fourth proportional to 7,990.40, 11,026.72 and 4,453.92 is: 6,146.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,990.40 : 11,026.72 = 4,453.92 : x
  2. Step 2: Convert to fraction form
    7,990.40/11,026.72 = 4,453.92/x
  3. Step 3: Cross multiply
    7,990.40x = 11,026.72 × 4,453.92
  4. Step 4: Simplify right side
    7,990.40x = 49,112,128.74
  5. Step 5: Solve for x
    x = 49,112,128.74/7,990.40
  6. Step 6: Final answer
    x = 6,146.39

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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.