Home / 3,135.60-4,328.04-1,958.40

Finding the Fourth Proportional to 3,135.60, 4,328.04 and 1,958.40

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Solution

The fourth proportional to 3,135.60, 4,328.04 and 1,958.40 is: 2,703.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,135.60 : 4,328.04 = 1,958.40 : x
  2. Step 2: Convert to fraction form
    3,135.60/4,328.04 = 1,958.40/x
  3. Step 3: Cross multiply
    3,135.60x = 4,328.04 × 1,958.40
  4. Step 4: Simplify right side
    3,135.60x = 8,476,033.54
  5. Step 5: Solve for x
    x = 8,476,033.54/3,135.60
  6. Step 6: Final answer
    x = 2,703.16

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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.