Home / 5,210.92-7,190.81-2,972.71

Finding the Fourth Proportional to 5,210.92, 7,190.81 and 2,972.71

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Solution

The fourth proportional to 5,210.92, 7,190.81 and 2,972.71 is: 4,102.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,210.92 : 7,190.81 = 2,972.71 : x
  2. Step 2: Convert to fraction form
    5,210.92/7,190.81 = 2,972.71/x
  3. Step 3: Cross multiply
    5,210.92x = 7,190.81 × 2,972.71
  4. Step 4: Simplify right side
    5,210.92x = 21,376,198.07
  5. Step 5: Solve for x
    x = 21,376,198.07/5,210.92
  6. Step 6: Final answer
    x = 4,102.19

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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.