Home / 7,929.05-10,947.44-7,087.06

Finding the Fourth Proportional to 7,929.05, 10,947.44 and 7,087.06

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Solution

The fourth proportional to 7,929.05, 10,947.44 and 7,087.06 is: 9,784.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,929.05 : 10,947.44 = 7,087.06 : x
  2. Step 2: Convert to fraction form
    7,929.05/10,947.44 = 7,087.06/x
  3. Step 3: Cross multiply
    7,929.05x = 10,947.44 × 7,087.06
  4. Step 4: Simplify right side
    7,929.05x = 77,585,073.95
  5. Step 5: Solve for x
    x = 77,585,073.95/7,929.05
  6. Step 6: Final answer
    x = 9,784.91

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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.