Home / 7,180.16-9,908.60-3,994.02

Finding the Fourth Proportional to 7,180.16, 9,908.60 and 3,994.02

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Solution

The fourth proportional to 7,180.16, 9,908.60 and 3,994.02 is: 5,511.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,180.16 : 9,908.60 = 3,994.02 : x
  2. Step 2: Convert to fraction form
    7,180.16/9,908.60 = 3,994.02/x
  3. Step 3: Cross multiply
    7,180.16x = 9,908.60 × 3,994.02
  4. Step 4: Simplify right side
    7,180.16x = 39,575,146.57
  5. Step 5: Solve for x
    x = 39,575,146.57/7,180.16
  6. Step 6: Final answer
    x = 5,511.74

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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.