Home / 1,442.20-1,990.80-944.68

Finding the Fourth Proportional to 1,442.20, 1,990.80 and 944.68

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Solution

The fourth proportional to 1,442.20, 1,990.80 and 944.68 is: 1,304.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,442.20 : 1,990.80 = 944.68 : x
  2. Step 2: Convert to fraction form
    1,442.20/1,990.80 = 944.68/x
  3. Step 3: Cross multiply
    1,442.20x = 1,990.80 × 944.68
  4. Step 4: Simplify right side
    1,442.20x = 1,880,668.94
  5. Step 5: Solve for x
    x = 1,880,668.94/1,442.20
  6. Step 6: Final answer
    x = 1,304.03

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.