Home / 7,115.66-9,818.92-4,879.45

Finding the Fourth Proportional to 7,115.66, 9,818.92 and 4,879.45

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Solution

The fourth proportional to 7,115.66, 9,818.92 and 4,879.45 is: 6,733.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,115.66 : 9,818.92 = 4,879.45 : x
  2. Step 2: Convert to fraction form
    7,115.66/9,818.92 = 4,879.45/x
  3. Step 3: Cross multiply
    7,115.66x = 9,818.92 × 4,879.45
  4. Step 4: Simplify right side
    7,115.66x = 47,910,929.19
  5. Step 5: Solve for x
    x = 47,910,929.19/7,115.66
  6. Step 6: Final answer
    x = 6,733.17

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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.