Home / 5,119.81-7,065.56-2,881.44

Finding the Fourth Proportional to 5,119.81, 7,065.56 and 2,881.44

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Solution

The fourth proportional to 5,119.81, 7,065.56 and 2,881.44 is: 3,976.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,119.81 : 7,065.56 = 2,881.44 : x
  2. Step 2: Convert to fraction form
    5,119.81/7,065.56 = 2,881.44/x
  3. Step 3: Cross multiply
    5,119.81x = 7,065.56 × 2,881.44
  4. Step 4: Simplify right side
    5,119.81x = 20,358,994.41
  5. Step 5: Solve for x
    x = 20,358,994.41/5,119.81
  6. Step 6: Final answer
    x = 3,976.52

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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.