Home / 5,187.63-7,158.74-2,829.72

Finding the Fourth Proportional to 5,187.63, 7,158.74 and 2,829.72

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Solution

The fourth proportional to 5,187.63, 7,158.74 and 2,829.72 is: 3,904.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,187.63 : 7,158.74 = 2,829.72 : x
  2. Step 2: Convert to fraction form
    5,187.63/7,158.74 = 2,829.72/x
  3. Step 3: Cross multiply
    5,187.63x = 7,158.74 × 2,829.72
  4. Step 4: Simplify right side
    5,187.63x = 20,257,229.75
  5. Step 5: Solve for x
    x = 20,257,229.75/5,187.63
  6. Step 6: Final answer
    x = 3,904.91

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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.