Home / 7,131.48-9,841.94-4,148.20

Finding the Fourth Proportional to 7,131.48, 9,841.94 and 4,148.20

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Solution

The fourth proportional to 7,131.48, 9,841.94 and 4,148.20 is: 5,724.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,131.48 : 9,841.94 = 4,148.20 : x
  2. Step 2: Convert to fraction form
    7,131.48/9,841.94 = 4,148.20/x
  3. Step 3: Cross multiply
    7,131.48x = 9,841.94 × 4,148.20
  4. Step 4: Simplify right side
    7,131.48x = 40,826,335.51
  5. Step 5: Solve for x
    x = 40,826,335.51/7,131.48
  6. Step 6: Final answer
    x = 5,724.81

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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.