Home / 2,305.39-3,180.35-1,420.87

Finding the Fourth Proportional to 2,305.39, 3,180.35 and 1,420.87

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Solution

The fourth proportional to 2,305.39, 3,180.35 and 1,420.87 is: 1,960.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,305.39 : 3,180.35 = 1,420.87 : x
  2. Step 2: Convert to fraction form
    2,305.39/3,180.35 = 1,420.87/x
  3. Step 3: Cross multiply
    2,305.39x = 3,180.35 × 1,420.87
  4. Step 4: Simplify right side
    2,305.39x = 4,518,863.90
  5. Step 5: Solve for x
    x = 4,518,863.90/2,305.39
  6. Step 6: Final answer
    x = 1,960.13

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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.