Home / 7,980.32-11,008.51-4,995.54

Finding the Fourth Proportional to 7,980.32, 11,008.51 and 4,995.54

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Solution

The fourth proportional to 7,980.32, 11,008.51 and 4,995.54 is: 6,891.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,980.32 : 11,008.51 = 4,995.54 : x
  2. Step 2: Convert to fraction form
    7,980.32/11,008.51 = 4,995.54/x
  3. Step 3: Cross multiply
    7,980.32x = 11,008.51 × 4,995.54
  4. Step 4: Simplify right side
    7,980.32x = 54,993,439.56
  5. Step 5: Solve for x
    x = 54,993,439.56/7,980.32
  6. Step 6: Final answer
    x = 6,891.13

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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.