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Finding the Fourth Proportional to 7,170.81, 9,895.14 and 4,026.39

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Solution

The fourth proportional to 7,170.81, 9,895.14 and 4,026.39 is: 5,556.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,170.81 : 9,895.14 = 4,026.39 : x
  2. Step 2: Convert to fraction form
    7,170.81/9,895.14 = 4,026.39/x
  3. Step 3: Cross multiply
    7,170.81x = 9,895.14 × 4,026.39
  4. Step 4: Simplify right side
    7,170.81x = 39,841,692.74
  5. Step 5: Solve for x
    x = 39,841,692.74/7,170.81
  6. Step 6: Final answer
    x = 5,556.09

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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.