Home / 3,100.85-4,648.61-1,020.30

Finding the Fourth Proportional to 3,100.85, 4,648.61 and 1,020.30

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Solution

The fourth proportional to 3,100.85, 4,648.61 and 1,020.30 is: 1,529.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,100.85 : 4,648.61 = 1,020.30 : x
  2. Step 2: Convert to fraction form
    3,100.85/4,648.61 = 1,020.30/x
  3. Step 3: Cross multiply
    3,100.85x = 4,648.61 × 1,020.30
  4. Step 4: Simplify right side
    3,100.85x = 4,742,976.78
  5. Step 5: Solve for x
    x = 4,742,976.78/3,100.85
  6. Step 6: Final answer
    x = 1,529.57

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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.