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Finding the Fourth Proportional to 5,058.18, 6,980.18 and 2,820.15

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Solution

The fourth proportional to 5,058.18, 6,980.18 and 2,820.15 is: 3,891.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,058.18 : 6,980.18 = 2,820.15 : x
  2. Step 2: Convert to fraction form
    5,058.18/6,980.18 = 2,820.15/x
  3. Step 3: Cross multiply
    5,058.18x = 6,980.18 × 2,820.15
  4. Step 4: Simplify right side
    5,058.18x = 19,685,140.53
  5. Step 5: Solve for x
    x = 19,685,140.53/5,058.18
  6. Step 6: Final answer
    x = 3,891.74

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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.