Home / 6,947.86-10,423.73-2,790.78

Finding the Fourth Proportional to 6,947.86, 10,423.73 and 2,790.78

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Solution

The fourth proportional to 6,947.86, 10,423.73 and 2,790.78 is: 4,186.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,947.86 : 10,423.73 = 2,790.78 : x
  2. Step 2: Convert to fraction form
    6,947.86/10,423.73 = 2,790.78/x
  3. Step 3: Cross multiply
    6,947.86x = 10,423.73 × 2,790.78
  4. Step 4: Simplify right side
    6,947.86x = 29,090,337.21
  5. Step 5: Solve for x
    x = 29,090,337.21/6,947.86
  6. Step 6: Final answer
    x = 4,186.95

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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.