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Finding the Fourth Proportional to 4,918.10, 6,781.06 and 4,018.51

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Solution

The fourth proportional to 4,918.10, 6,781.06 and 4,018.51 is: 5,540.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,918.10 : 6,781.06 = 4,018.51 : x
  2. Step 2: Convert to fraction form
    4,918.10/6,781.06 = 4,018.51/x
  3. Step 3: Cross multiply
    4,918.10x = 6,781.06 × 4,018.51
  4. Step 4: Simplify right side
    4,918.10x = 27,249,770.92
  5. Step 5: Solve for x
    x = 27,249,770.92/4,918.10
  6. Step 6: Final answer
    x = 5,540.72

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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.