Home / 3,220.40-4,831.29-999.19

Finding the Fourth Proportional to 3,220.40, 4,831.29 and 999.19

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Solution

The fourth proportional to 3,220.40, 4,831.29 and 999.19 is: 1,499.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,220.40 : 4,831.29 = 999.19 : x
  2. Step 2: Convert to fraction form
    3,220.40/4,831.29 = 999.19/x
  3. Step 3: Cross multiply
    3,220.40x = 4,831.29 × 999.19
  4. Step 4: Simplify right side
    3,220.40x = 4,827,366.45
  5. Step 5: Solve for x
    x = 4,827,366.45/3,220.40
  6. Step 6: Final answer
    x = 1,499.00

Related Problems

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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.