Home / 3,100.19-4,650.71-1,152.20

Finding the Fourth Proportional to 3,100.19, 4,650.71 and 1,152.20

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Solution

The fourth proportional to 3,100.19, 4,650.71 and 1,152.20 is: 1,728.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,100.19 : 4,650.71 = 1,152.20 : x
  2. Step 2: Convert to fraction form
    3,100.19/4,650.71 = 1,152.20/x
  3. Step 3: Cross multiply
    3,100.19x = 4,650.71 × 1,152.20
  4. Step 4: Simplify right side
    3,100.19x = 5,358,519.05
  5. Step 5: Solve for x
    x = 5,358,519.05/3,100.19
  6. Step 6: Final answer
    x = 1,728.45

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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.