Home / 7,780.85-10,734.51-4,791.50

Finding the Fourth Proportional to 7,780.85, 10,734.51 and 4,791.50

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Solution

The fourth proportional to 7,780.85, 10,734.51 and 4,791.50 is: 6,610.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,780.85 : 10,734.51 = 4,791.50 : x
  2. Step 2: Convert to fraction form
    7,780.85/10,734.51 = 4,791.50/x
  3. Step 3: Cross multiply
    7,780.85x = 10,734.51 × 4,791.50
  4. Step 4: Simplify right side
    7,780.85x = 51,434,327.03
  5. Step 5: Solve for x
    x = 51,434,327.03/7,780.85
  6. Step 6: Final answer
    x = 6,610.38

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.