Home / 7,780.99-11,666.77-3,101.71

Finding the Fourth Proportional to 7,780.99, 11,666.77 and 3,101.71

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Solution

The fourth proportional to 7,780.99, 11,666.77 and 3,101.71 is: 4,650.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,780.99 : 11,666.77 = 3,101.71 : x
  2. Step 2: Convert to fraction form
    7,780.99/11,666.77 = 3,101.71/x
  3. Step 3: Cross multiply
    7,780.99x = 11,666.77 × 3,101.71
  4. Step 4: Simplify right side
    7,780.99x = 36,186,900.26
  5. Step 5: Solve for x
    x = 36,186,900.26/7,780.99
  6. Step 6: Final answer
    x = 4,650.68

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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.