Home / 1,771.25-2,444.21-985.30

Finding the Fourth Proportional to 1,771.25, 2,444.21 and 985.30

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Solution

The fourth proportional to 1,771.25, 2,444.21 and 985.30 is: 1,359.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,771.25 : 2,444.21 = 985.30 : x
  2. Step 2: Convert to fraction form
    1,771.25/2,444.21 = 985.30/x
  3. Step 3: Cross multiply
    1,771.25x = 2,444.21 × 985.30
  4. Step 4: Simplify right side
    1,771.25x = 2,408,272.77
  5. Step 5: Solve for x
    x = 2,408,272.77/1,771.25
  6. Step 6: Final answer
    x = 1,359.65

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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.