Home / 3,411.36-4,707.72-1,919.28

Finding the Fourth Proportional to 3,411.36, 4,707.72 and 1,919.28

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Solution

The fourth proportional to 3,411.36, 4,707.72 and 1,919.28 is: 2,648.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,411.36 : 4,707.72 = 1,919.28 : x
  2. Step 2: Convert to fraction form
    3,411.36/4,707.72 = 1,919.28/x
  3. Step 3: Cross multiply
    3,411.36x = 4,707.72 × 1,919.28
  4. Step 4: Simplify right side
    3,411.36x = 9,035,432.84
  5. Step 5: Solve for x
    x = 9,035,432.84/3,411.36
  6. Step 6: Final answer
    x = 2,648.63

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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.