Home / 3,931.67-5,427.12-2,605.80

Finding the Fourth Proportional to 3,931.67, 5,427.12 and 2,605.80

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Solution

The fourth proportional to 3,931.67, 5,427.12 and 2,605.80 is: 3,596.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,931.67 : 5,427.12 = 2,605.80 : x
  2. Step 2: Convert to fraction form
    3,931.67/5,427.12 = 2,605.80/x
  3. Step 3: Cross multiply
    3,931.67x = 5,427.12 × 2,605.80
  4. Step 4: Simplify right side
    3,931.67x = 14,141,974.23
  5. Step 5: Solve for x
    x = 14,141,974.23/3,931.67
  6. Step 6: Final answer
    x = 3,596.94

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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.