Home / 5,318.91-7,340.37-3,080.40

Finding the Fourth Proportional to 5,318.91, 7,340.37 and 3,080.40

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Solution

The fourth proportional to 5,318.91, 7,340.37 and 3,080.40 is: 4,251.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,318.91 : 7,340.37 = 3,080.40 : x
  2. Step 2: Convert to fraction form
    5,318.91/7,340.37 = 3,080.40/x
  3. Step 3: Cross multiply
    5,318.91x = 7,340.37 × 3,080.40
  4. Step 4: Simplify right side
    5,318.91x = 22,611,275.75
  5. Step 5: Solve for x
    x = 22,611,275.75/5,318.91
  6. Step 6: Final answer
    x = 4,251.11

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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.