Home / 5,155.75-7,116.78-3,059.88

Finding the Fourth Proportional to 5,155.75, 7,116.78 and 3,059.88

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Solution

The fourth proportional to 5,155.75, 7,116.78 and 3,059.88 is: 4,223.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,155.75 : 7,116.78 = 3,059.88 : x
  2. Step 2: Convert to fraction form
    5,155.75/7,116.78 = 3,059.88/x
  3. Step 3: Cross multiply
    5,155.75x = 7,116.78 × 3,059.88
  4. Step 4: Simplify right side
    5,155.75x = 21,776,457.20
  5. Step 5: Solve for x
    x = 21,776,457.20/5,155.75
  6. Step 6: Final answer
    x = 4,223.72

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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.