Home / 7,860.45-11,780.65-3,691.24

Finding the Fourth Proportional to 7,860.45, 11,780.65 and 3,691.24

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Solution

The fourth proportional to 7,860.45, 11,780.65 and 3,691.24 is: 5,532.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,860.45 : 11,780.65 = 3,691.24 : x
  2. Step 2: Convert to fraction form
    7,860.45/11,780.65 = 3,691.24/x
  3. Step 3: Cross multiply
    7,860.45x = 11,780.65 × 3,691.24
  4. Step 4: Simplify right side
    7,860.45x = 43,485,206.51
  5. Step 5: Solve for x
    x = 43,485,206.51/7,860.45
  6. Step 6: Final answer
    x = 5,532.15

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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.