Home / 7,114.89-9,818.39-3,971.37

Finding the Fourth Proportional to 7,114.89, 9,818.39 and 3,971.37

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Solution

The fourth proportional to 7,114.89, 9,818.39 and 3,971.37 is: 5,480.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,114.89 : 9,818.39 = 3,971.37 : x
  2. Step 2: Convert to fraction form
    7,114.89/9,818.39 = 3,971.37/x
  3. Step 3: Cross multiply
    7,114.89x = 9,818.39 × 3,971.37
  4. Step 4: Simplify right side
    7,114.89x = 38,992,439.64
  5. Step 5: Solve for x
    x = 38,992,439.64/7,114.89
  6. Step 6: Final answer
    x = 5,480.40

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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.