Home / 7,881.86-11,818.46-3,437.69

Finding the Fourth Proportional to 7,881.86, 11,818.46 and 3,437.69

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Solution

The fourth proportional to 7,881.86, 11,818.46 and 3,437.69 is: 5,154.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,881.86 : 11,818.46 = 3,437.69 : x
  2. Step 2: Convert to fraction form
    7,881.86/11,818.46 = 3,437.69/x
  3. Step 3: Cross multiply
    7,881.86x = 11,818.46 × 3,437.69
  4. Step 4: Simplify right side
    7,881.86x = 40,628,198.40
  5. Step 5: Solve for x
    x = 40,628,198.40/7,881.86
  6. Step 6: Final answer
    x = 5,154.65

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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.