Home / 5,091.80-7,639.02-2,168.60

Finding the Fourth Proportional to 5,091.80, 7,639.02 and 2,168.60

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Solution

The fourth proportional to 5,091.80, 7,639.02 and 2,168.60 is: 3,253.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,091.80 : 7,639.02 = 2,168.60 : x
  2. Step 2: Convert to fraction form
    5,091.80/7,639.02 = 2,168.60/x
  3. Step 3: Cross multiply
    5,091.80x = 7,639.02 × 2,168.60
  4. Step 4: Simplify right side
    5,091.80x = 16,565,978.77
  5. Step 5: Solve for x
    x = 16,565,978.77/5,091.80
  6. Step 6: Final answer
    x = 3,253.46

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.