Home / 5,116.60-7,061.16-2,878.36

Finding the Fourth Proportional to 5,116.60, 7,061.16 and 2,878.36

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Solution

The fourth proportional to 5,116.60, 7,061.16 and 2,878.36 is: 3,972.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,116.60 : 7,061.16 = 2,878.36 : x
  2. Step 2: Convert to fraction form
    5,116.60/7,061.16 = 2,878.36/x
  3. Step 3: Cross multiply
    5,116.60x = 7,061.16 × 2,878.36
  4. Step 4: Simplify right side
    5,116.60x = 20,324,560.50
  5. Step 5: Solve for x
    x = 20,324,560.50/5,116.60
  6. Step 6: Final answer
    x = 3,972.28

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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.