Home / 7,170.81-9,895.39-3,984.33

Finding the Fourth Proportional to 7,170.81, 9,895.39 and 3,984.33

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Solution

The fourth proportional to 7,170.81, 9,895.39 and 3,984.33 is: 5,498.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,170.81 : 9,895.39 = 3,984.33 : x
  2. Step 2: Convert to fraction form
    7,170.81/9,895.39 = 3,984.33/x
  3. Step 3: Cross multiply
    7,170.81x = 9,895.39 × 3,984.33
  4. Step 4: Simplify right side
    7,170.81x = 39,426,499.24
  5. Step 5: Solve for x
    x = 39,426,499.24/7,170.81
  6. Step 6: Final answer
    x = 5,498.19

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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.