Home / 7,220.79-10,831.47-2,290.32

Finding the Fourth Proportional to 7,220.79, 10,831.47 and 2,290.32

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Solution

The fourth proportional to 7,220.79, 10,831.47 and 2,290.32 is: 3,435.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,220.79 : 10,831.47 = 2,290.32 : x
  2. Step 2: Convert to fraction form
    7,220.79/10,831.47 = 2,290.32/x
  3. Step 3: Cross multiply
    7,220.79x = 10,831.47 × 2,290.32
  4. Step 4: Simplify right side
    7,220.79x = 24,807,532.37
  5. Step 5: Solve for x
    x = 24,807,532.37/7,220.79
  6. Step 6: Final answer
    x = 3,435.57

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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.