Home / 5,058.80-6,981.38-2,820.69

Finding the Fourth Proportional to 5,058.80, 6,981.38 and 2,820.69

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Solution

The fourth proportional to 5,058.80, 6,981.38 and 2,820.69 is: 3,892.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,058.80 : 6,981.38 = 2,820.69 : x
  2. Step 2: Convert to fraction form
    5,058.80/6,981.38 = 2,820.69/x
  3. Step 3: Cross multiply
    5,058.80x = 6,981.38 × 2,820.69
  4. Step 4: Simplify right side
    5,058.80x = 19,692,308.75
  5. Step 5: Solve for x
    x = 19,692,308.75/5,058.80
  6. Step 6: Final answer
    x = 3,892.68

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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.