Home / 3,185.10-4,778.28-1,237.50

Finding the Fourth Proportional to 3,185.10, 4,778.28 and 1,237.50

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Solution

The fourth proportional to 3,185.10, 4,778.28 and 1,237.50 is: 1,856.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,185.10 : 4,778.28 = 1,237.50 : x
  2. Step 2: Convert to fraction form
    3,185.10/4,778.28 = 1,237.50/x
  3. Step 3: Cross multiply
    3,185.10x = 4,778.28 × 1,237.50
  4. Step 4: Simplify right side
    3,185.10x = 5,913,121.50
  5. Step 5: Solve for x
    x = 5,913,121.50/3,185.10
  6. Step 6: Final answer
    x = 1,856.49

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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.