Home / 5,105.87-7,656.91-1,818.08

Finding the Fourth Proportional to 5,105.87, 7,656.91 and 1,818.08

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Solution

The fourth proportional to 5,105.87, 7,656.91 and 1,818.08 is: 2,726.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,105.87 : 7,656.91 = 1,818.08 : x
  2. Step 2: Convert to fraction form
    5,105.87/7,656.91 = 1,818.08/x
  3. Step 3: Cross multiply
    5,105.87x = 7,656.91 × 1,818.08
  4. Step 4: Simplify right side
    5,105.87x = 13,920,874.93
  5. Step 5: Solve for x
    x = 13,920,874.93/5,105.87
  6. Step 6: Final answer
    x = 2,726.45

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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.