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Finding the Fourth Proportional to 5,058.66, 6,981.16 and 2,820.53

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Solution

The fourth proportional to 5,058.66, 6,981.16 and 2,820.53 is: 3,892.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,058.66 : 6,981.16 = 2,820.53 : x
  2. Step 2: Convert to fraction form
    5,058.66/6,981.16 = 2,820.53/x
  3. Step 3: Cross multiply
    5,058.66x = 6,981.16 × 2,820.53
  4. Step 4: Simplify right side
    5,058.66x = 19,690,571.21
  5. Step 5: Solve for x
    x = 19,690,571.21/5,058.66
  6. Step 6: Final answer
    x = 3,892.45

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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.