Home / 2,764.55-3,811.32-1,878.81

Finding the Fourth Proportional to 2,764.55, 3,811.32 and 1,878.81

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Solution

The fourth proportional to 2,764.55, 3,811.32 and 1,878.81 is: 2,590.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,764.55 : 3,811.32 = 1,878.81 : x
  2. Step 2: Convert to fraction form
    2,764.55/3,811.32 = 1,878.81/x
  3. Step 3: Cross multiply
    2,764.55x = 3,811.32 × 1,878.81
  4. Step 4: Simplify right side
    2,764.55x = 7,160,746.13
  5. Step 5: Solve for x
    x = 7,160,746.13/2,764.55
  6. Step 6: Final answer
    x = 2,590.21

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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.