Home / 7,215.23-10,816.32-2,831.51

Finding the Fourth Proportional to 7,215.23, 10,816.32 and 2,831.51

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Solution

The fourth proportional to 7,215.23, 10,816.32 and 2,831.51 is: 4,244.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,215.23 : 10,816.32 = 2,831.51 : x
  2. Step 2: Convert to fraction form
    7,215.23/10,816.32 = 2,831.51/x
  3. Step 3: Cross multiply
    7,215.23x = 10,816.32 × 2,831.51
  4. Step 4: Simplify right side
    7,215.23x = 30,626,504.09
  5. Step 5: Solve for x
    x = 30,626,504.09/7,215.23
  6. Step 6: Final answer
    x = 4,244.70

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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.