Home / 7,931.58-11,891.35-4,810.78

Finding the Fourth Proportional to 7,931.58, 11,891.35 and 4,810.78

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Solution

The fourth proportional to 7,931.58, 11,891.35 and 4,810.78 is: 7,212.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,931.58 : 11,891.35 = 4,810.78 : x
  2. Step 2: Convert to fraction form
    7,931.58/11,891.35 = 4,810.78/x
  3. Step 3: Cross multiply
    7,931.58x = 11,891.35 × 4,810.78
  4. Step 4: Simplify right side
    7,931.58x = 57,206,668.75
  5. Step 5: Solve for x
    x = 57,206,668.75/7,931.58
  6. Step 6: Final answer
    x = 7,212.52

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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.