Home / 3,218.54-4,442.65-1,960.40

Finding the Fourth Proportional to 3,218.54, 4,442.65 and 1,960.40

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Solution

The fourth proportional to 3,218.54, 4,442.65 and 1,960.40 is: 2,706.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,218.54 : 4,442.65 = 1,960.40 : x
  2. Step 2: Convert to fraction form
    3,218.54/4,442.65 = 1,960.40/x
  3. Step 3: Cross multiply
    3,218.54x = 4,442.65 × 1,960.40
  4. Step 4: Simplify right side
    3,218.54x = 8,709,377.27
  5. Step 5: Solve for x
    x = 8,709,377.27/3,218.54
  6. Step 6: Final answer
    x = 2,706.01

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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.