Home / 2,738.51-3,778.65-1,618.89

Finding the Fourth Proportional to 2,738.51, 3,778.65 and 1,618.89

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Solution

The fourth proportional to 2,738.51, 3,778.65 and 1,618.89 is: 2,233.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,738.51 : 3,778.65 = 1,618.89 : x
  2. Step 2: Convert to fraction form
    2,738.51/3,778.65 = 1,618.89/x
  3. Step 3: Cross multiply
    2,738.51x = 3,778.65 × 1,618.89
  4. Step 4: Simplify right side
    2,738.51x = 6,117,204.53
  5. Step 5: Solve for x
    x = 6,117,204.53/2,738.51
  6. Step 6: Final answer
    x = 2,233.77

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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.