Home / 7,124.72-9,832.14-3,980.96

Finding the Fourth Proportional to 7,124.72, 9,832.14 and 3,980.96

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Solution

The fourth proportional to 7,124.72, 9,832.14 and 3,980.96 is: 5,493.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,124.72 : 9,832.14 = 3,980.96 : x
  2. Step 2: Convert to fraction form
    7,124.72/9,832.14 = 3,980.96/x
  3. Step 3: Cross multiply
    7,124.72x = 9,832.14 × 3,980.96
  4. Step 4: Simplify right side
    7,124.72x = 39,141,356.05
  5. Step 5: Solve for x
    x = 39,141,356.05/7,124.72
  6. Step 6: Final answer
    x = 5,493.74

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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.