Home / 7,085.36-9,778.04-3,941.76

Finding the Fourth Proportional to 7,085.36, 9,778.04 and 3,941.76

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Solution

The fourth proportional to 7,085.36, 9,778.04 and 3,941.76 is: 5,439.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,085.36 : 9,778.04 = 3,941.76 : x
  2. Step 2: Convert to fraction form
    7,085.36/9,778.04 = 3,941.76/x
  3. Step 3: Cross multiply
    7,085.36x = 9,778.04 × 3,941.76
  4. Step 4: Simplify right side
    7,085.36x = 38,542,686.95
  5. Step 5: Solve for x
    x = 38,542,686.95/7,085.36
  6. Step 6: Final answer
    x = 5,439.76

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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.