Home / 3,220.73-4,831.85-999.45

Finding the Fourth Proportional to 3,220.73, 4,831.85 and 999.45

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Solution

The fourth proportional to 3,220.73, 4,831.85 and 999.45 is: 1,499.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,220.73 : 4,831.85 = 999.45 : x
  2. Step 2: Convert to fraction form
    3,220.73/4,831.85 = 999.45/x
  3. Step 3: Cross multiply
    3,220.73x = 4,831.85 × 999.45
  4. Step 4: Simplify right side
    3,220.73x = 4,829,192.48
  5. Step 5: Solve for x
    x = 4,829,192.48/3,220.73
  6. Step 6: Final answer
    x = 1,499.41

Related Problems

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Double scale
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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.