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Finding the Fourth Proportional to 5,058.56, 6,980.58 and 2,820.38

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Solution

The fourth proportional to 5,058.56, 6,980.58 and 2,820.38 is: 3,891.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,058.56 : 6,980.58 = 2,820.38 : x
  2. Step 2: Convert to fraction form
    5,058.56/6,980.58 = 2,820.38/x
  3. Step 3: Cross multiply
    5,058.56x = 6,980.58 × 2,820.38
  4. Step 4: Simplify right side
    5,058.56x = 19,687,888.22
  5. Step 5: Solve for x
    x = 19,687,888.22/5,058.56
  6. Step 6: Final answer
    x = 3,891.99

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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.