Home / 7,957.20-10,980.72-4,420.68

Finding the Fourth Proportional to 7,957.20, 10,980.72 and 4,420.68

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Solution

The fourth proportional to 7,957.20, 10,980.72 and 4,420.68 is: 6,100.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,957.20 : 10,980.72 = 4,420.68 : x
  2. Step 2: Convert to fraction form
    7,957.20/10,980.72 = 4,420.68/x
  3. Step 3: Cross multiply
    7,957.20x = 10,980.72 × 4,420.68
  4. Step 4: Simplify right side
    7,957.20x = 48,542,249.29
  5. Step 5: Solve for x
    x = 48,542,249.29/7,957.20
  6. Step 6: Final answer
    x = 6,100.42

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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.