Home / 5,058.10-6,980.21-2,820.12

Finding the Fourth Proportional to 5,058.10, 6,980.21 and 2,820.12

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Solution

The fourth proportional to 5,058.10, 6,980.21 and 2,820.12 is: 3,891.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,058.10 : 6,980.21 = 2,820.12 : x
  2. Step 2: Convert to fraction form
    5,058.10/6,980.21 = 2,820.12/x
  3. Step 3: Cross multiply
    5,058.10x = 6,980.21 × 2,820.12
  4. Step 4: Simplify right side
    5,058.10x = 19,685,031.59
  5. Step 5: Solve for x
    x = 19,685,031.59/5,058.10
  6. Step 6: Final answer
    x = 3,891.78

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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.