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Finding the Fourth Proportional to 5,058.88, 6,981.44 and 2,790.24

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Solution

The fourth proportional to 5,058.88, 6,981.44 and 2,790.24 is: 3,850.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,058.88 : 6,981.44 = 2,790.24 : x
  2. Step 2: Convert to fraction form
    5,058.88/6,981.44 = 2,790.24/x
  3. Step 3: Cross multiply
    5,058.88x = 6,981.44 × 2,790.24
  4. Step 4: Simplify right side
    5,058.88x = 19,479,893.15
  5. Step 5: Solve for x
    x = 19,479,893.15/5,058.88
  6. Step 6: Final answer
    x = 3,850.63

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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.