Home / 3,108.76-4,292.16-2,399.35

Finding the Fourth Proportional to 3,108.76, 4,292.16 and 2,399.35

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Solution

The fourth proportional to 3,108.76, 4,292.16 and 2,399.35 is: 3,312.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,108.76 : 4,292.16 = 2,399.35 : x
  2. Step 2: Convert to fraction form
    3,108.76/4,292.16 = 2,399.35/x
  3. Step 3: Cross multiply
    3,108.76x = 4,292.16 × 2,399.35
  4. Step 4: Simplify right side
    3,108.76x = 10,298,394.10
  5. Step 5: Solve for x
    x = 10,298,394.10/3,108.76
  6. Step 6: Final answer
    x = 3,312.70

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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.