Home / 3,516.90-5,275.35-919.85

Finding the Fourth Proportional to 3,516.90, 5,275.35 and 919.85

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Solution

The fourth proportional to 3,516.90, 5,275.35 and 919.85 is: 1,379.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,516.90 : 5,275.35 = 919.85 : x
  2. Step 2: Convert to fraction form
    3,516.90/5,275.35 = 919.85/x
  3. Step 3: Cross multiply
    3,516.90x = 5,275.35 × 919.85
  4. Step 4: Simplify right side
    3,516.90x = 4,852,504.32
  5. Step 5: Solve for x
    x = 4,852,504.32/3,516.90
  6. Step 6: Final answer
    x = 1,379.77

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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.