Home / 3,845.81-5,307.12-2,167.39

Finding the Fourth Proportional to 3,845.81, 5,307.12 and 2,167.39

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Solution

The fourth proportional to 3,845.81, 5,307.12 and 2,167.39 is: 2,990.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,845.81 : 5,307.12 = 2,167.39 : x
  2. Step 2: Convert to fraction form
    3,845.81/5,307.12 = 2,167.39/x
  3. Step 3: Cross multiply
    3,845.81x = 5,307.12 × 2,167.39
  4. Step 4: Simplify right side
    3,845.81x = 11,502,605.45
  5. Step 5: Solve for x
    x = 11,502,605.45/3,845.81
  6. Step 6: Final answer
    x = 2,990.94

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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.