Home / 3,108.48-4,289.60-1,711.20

Finding the Fourth Proportional to 3,108.48, 4,289.60 and 1,711.20

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Solution

The fourth proportional to 3,108.48, 4,289.60 and 1,711.20 is: 2,361.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,108.48 : 4,289.60 = 1,711.20 : x
  2. Step 2: Convert to fraction form
    3,108.48/4,289.60 = 1,711.20/x
  3. Step 3: Cross multiply
    3,108.48x = 4,289.60 × 1,711.20
  4. Step 4: Simplify right side
    3,108.48x = 7,340,363.52
  5. Step 5: Solve for x
    x = 7,340,363.52/3,108.48
  6. Step 6: Final answer
    x = 2,361.40

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Double scale
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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.