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Finding the Fourth Proportional to 1,775.52, 2,449.98 and 989.52

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Solution

The fourth proportional to 1,775.52, 2,449.98 and 989.52 is: 1,365.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,775.52 : 2,449.98 = 989.52 : x
  2. Step 2: Convert to fraction form
    1,775.52/2,449.98 = 989.52/x
  3. Step 3: Cross multiply
    1,775.52x = 2,449.98 × 989.52
  4. Step 4: Simplify right side
    1,775.52x = 2,424,304.21
  5. Step 5: Solve for x
    x = 2,424,304.21/1,775.52
  6. Step 6: Final answer
    x = 1,365.41

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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.