Home / 5,187.65-7,158.99-2,829.78

Finding the Fourth Proportional to 5,187.65, 7,158.99 and 2,829.78

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Solution

The fourth proportional to 5,187.65, 7,158.99 and 2,829.78 is: 3,905.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,187.65 : 7,158.99 = 2,829.78 : x
  2. Step 2: Convert to fraction form
    5,187.65/7,158.99 = 2,829.78/x
  3. Step 3: Cross multiply
    5,187.65x = 7,158.99 × 2,829.78
  4. Step 4: Simplify right side
    5,187.65x = 20,258,366.72
  5. Step 5: Solve for x
    x = 20,258,366.72/5,187.65
  6. Step 6: Final answer
    x = 3,905.12

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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.