Home / 5,139.63-7,092.75-3,015.20

Finding the Fourth Proportional to 5,139.63, 7,092.75 and 3,015.20

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Solution

The fourth proportional to 5,139.63, 7,092.75 and 3,015.20 is: 4,161.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,139.63 : 7,092.75 = 3,015.20 : x
  2. Step 2: Convert to fraction form
    5,139.63/7,092.75 = 3,015.20/x
  3. Step 3: Cross multiply
    5,139.63x = 7,092.75 × 3,015.20
  4. Step 4: Simplify right side
    5,139.63x = 21,386,076.74
  5. Step 5: Solve for x
    x = 21,386,076.74/5,139.63
  6. Step 6: Final answer
    x = 4,161.01

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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.