Home / 2,829.20-4,244.40-981.81

Finding the Fourth Proportional to 2,829.20, 4,244.40 and 981.81

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Solution

The fourth proportional to 2,829.20, 4,244.40 and 981.81 is: 1,472.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,829.20 : 4,244.40 = 981.81 : x
  2. Step 2: Convert to fraction form
    2,829.20/4,244.40 = 981.81/x
  3. Step 3: Cross multiply
    2,829.20x = 4,244.40 × 981.81
  4. Step 4: Simplify right side
    2,829.20x = 4,167,194.36
  5. Step 5: Solve for x
    x = 4,167,194.36/2,829.20
  6. Step 6: Final answer
    x = 1,472.93

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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.