Home / 5,077.90-7,007.21-2,809.11

Finding the Fourth Proportional to 5,077.90, 7,007.21 and 2,809.11

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Solution

The fourth proportional to 5,077.90, 7,007.21 and 2,809.11 is: 3,876.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,077.90 : 7,007.21 = 2,809.11 : x
  2. Step 2: Convert to fraction form
    5,077.90/7,007.21 = 2,809.11/x
  3. Step 3: Cross multiply
    5,077.90x = 7,007.21 × 2,809.11
  4. Step 4: Simplify right side
    5,077.90x = 19,684,023.68
  5. Step 5: Solve for x
    x = 19,684,023.68/5,077.90
  6. Step 6: Final answer
    x = 3,876.41

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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.