Home / 7,780.49-11,666.02-3,101.21

Finding the Fourth Proportional to 7,780.49, 11,666.02 and 3,101.21

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Solution

The fourth proportional to 7,780.49, 11,666.02 and 3,101.21 is: 4,649.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,780.49 : 11,666.02 = 3,101.21 : x
  2. Step 2: Convert to fraction form
    7,780.49/11,666.02 = 3,101.21/x
  3. Step 3: Cross multiply
    7,780.49x = 11,666.02 × 3,101.21
  4. Step 4: Simplify right side
    7,780.49x = 36,178,777.88
  5. Step 5: Solve for x
    x = 36,178,777.88/7,780.49
  6. Step 6: Final answer
    x = 4,649.94

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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.