Home / 2,283.50-3,423.20-821.63

Finding the Fourth Proportional to 2,283.50, 3,423.20 and 821.63

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Solution

The fourth proportional to 2,283.50, 3,423.20 and 821.63 is: 1,231.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,283.50 : 3,423.20 = 821.63 : x
  2. Step 2: Convert to fraction form
    2,283.50/3,423.20 = 821.63/x
  3. Step 3: Cross multiply
    2,283.50x = 3,423.20 × 821.63
  4. Step 4: Simplify right side
    2,283.50x = 2,812,582.59
  5. Step 5: Solve for x
    x = 2,812,582.59/2,283.50
  6. Step 6: Final answer
    x = 1,231.70

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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.