Home / 1,771.62-2,445.03-985.71

Finding the Fourth Proportional to 1,771.62, 2,445.03 and 985.71

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Solution

The fourth proportional to 1,771.62, 2,445.03 and 985.71 is: 1,360.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,771.62 : 2,445.03 = 985.71 : x
  2. Step 2: Convert to fraction form
    1,771.62/2,445.03 = 985.71/x
  3. Step 3: Cross multiply
    1,771.62x = 2,445.03 × 985.71
  4. Step 4: Simplify right side
    1,771.62x = 2,410,090.52
  5. Step 5: Solve for x
    x = 2,410,090.52/1,771.62
  6. Step 6: Final answer
    x = 1,360.39

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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.