Home / 7,780.39-11,669.29-3,338.77

Finding the Fourth Proportional to 7,780.39, 11,669.29 and 3,338.77

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Solution

The fourth proportional to 7,780.39, 11,669.29 and 3,338.77 is: 5,007.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,780.39 : 11,669.29 = 3,338.77 : x
  2. Step 2: Convert to fraction form
    7,780.39/11,669.29 = 3,338.77/x
  3. Step 3: Cross multiply
    7,780.39x = 11,669.29 × 3,338.77
  4. Step 4: Simplify right side
    7,780.39x = 38,961,075.37
  5. Step 5: Solve for x
    x = 38,961,075.37/7,780.39
  6. Step 6: Final answer
    x = 5,007.60

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.