Home / 8,971.66-13,457.37-3,128.25

Finding the Fourth Proportional to 8,971.66, 13,457.37 and 3,128.25

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Solution

The fourth proportional to 8,971.66, 13,457.37 and 3,128.25 is: 4,692.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,971.66 : 13,457.37 = 3,128.25 : x
  2. Step 2: Convert to fraction form
    8,971.66/13,457.37 = 3,128.25/x
  3. Step 3: Cross multiply
    8,971.66x = 13,457.37 × 3,128.25
  4. Step 4: Simplify right side
    8,971.66x = 42,098,017.70
  5. Step 5: Solve for x
    x = 42,098,017.70/8,971.66
  6. Step 6: Final answer
    x = 4,692.33

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.