Home / 7,770.08-11,655.20-2,839.68

Finding the Fourth Proportional to 7,770.08, 11,655.20 and 2,839.68

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Solution

The fourth proportional to 7,770.08, 11,655.20 and 2,839.68 is: 4,259.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,770.08 : 11,655.20 = 2,839.68 : x
  2. Step 2: Convert to fraction form
    7,770.08/11,655.20 = 2,839.68/x
  3. Step 3: Cross multiply
    7,770.08x = 11,655.20 × 2,839.68
  4. Step 4: Simplify right side
    7,770.08x = 33,097,038.34
  5. Step 5: Solve for x
    x = 33,097,038.34/7,770.08
  6. Step 6: Final answer
    x = 4,259.55

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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.