Home / 7,780.20-10,750.66-5,913.96

Finding the Fourth Proportional to 7,780.20, 10,750.66 and 5,913.96

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Solution

The fourth proportional to 7,780.20, 10,750.66 and 5,913.96 is: 8,171.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,780.20 : 10,750.66 = 5,913.96 : x
  2. Step 2: Convert to fraction form
    7,780.20/10,750.66 = 5,913.96/x
  3. Step 3: Cross multiply
    7,780.20x = 10,750.66 × 5,913.96
  4. Step 4: Simplify right side
    7,780.20x = 63,578,973.21
  5. Step 5: Solve for x
    x = 63,578,973.21/7,780.20
  6. Step 6: Final answer
    x = 8,171.89

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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.