Home / 7,977.69-11,006.25-7,965.37

Finding the Fourth Proportional to 7,977.69, 11,006.25 and 7,965.37

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Solution

The fourth proportional to 7,977.69, 11,006.25 and 7,965.37 is: 10,989.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,977.69 : 11,006.25 = 7,965.37 : x
  2. Step 2: Convert to fraction form
    7,977.69/11,006.25 = 7,965.37/x
  3. Step 3: Cross multiply
    7,977.69x = 11,006.25 × 7,965.37
  4. Step 4: Simplify right side
    7,977.69x = 87,668,837.45
  5. Step 5: Solve for x
    x = 87,668,837.45/7,977.69
  6. Step 6: Final answer
    x = 10,989.25

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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.