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Finding the Fourth Proportional to 7,860.47, 11,798.67 and 6,976.76

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Solution

The fourth proportional to 7,860.47, 11,798.67 and 6,976.76 is: 10,472.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,860.47 : 11,798.67 = 6,976.76 : x
  2. Step 2: Convert to fraction form
    7,860.47/11,798.67 = 6,976.76/x
  3. Step 3: Cross multiply
    7,860.47x = 11,798.67 × 6,976.76
  4. Step 4: Simplify right side
    7,860.47x = 82,316,488.91
  5. Step 5: Solve for x
    x = 82,316,488.91/7,860.47
  6. Step 6: Final answer
    x = 10,472.21

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1.5x scale

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.