Home / 7,085.40-9,776.98-3,941

Finding the Fourth Proportional to 7,085.40, 9,776.98 and 3,941

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Solution

The fourth proportional to 7,085.40, 9,776.98 and 3,941 is: 5,438.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,085.40 : 9,776.98 = 3,941 : x
  2. Step 2: Convert to fraction form
    7,085.40/9,776.98 = 3,941/x
  3. Step 3: Cross multiply
    7,085.40x = 9,776.98 × 3,941
  4. Step 4: Simplify right side
    7,085.40x = 38,531,078.18
  5. Step 5: Solve for x
    x = 38,531,078.18/7,085.40
  6. Step 6: Final answer
    x = 5,438.09

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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.