Home / 3,140.64-4,706.91-1,289.54

Finding the Fourth Proportional to 3,140.64, 4,706.91 and 1,289.54

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Solution

The fourth proportional to 3,140.64, 4,706.91 and 1,289.54 is: 1,932.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,140.64 : 4,706.91 = 1,289.54 : x
  2. Step 2: Convert to fraction form
    3,140.64/4,706.91 = 1,289.54/x
  3. Step 3: Cross multiply
    3,140.64x = 4,706.91 × 1,289.54
  4. Step 4: Simplify right side
    3,140.64x = 6,069,725.19
  5. Step 5: Solve for x
    x = 6,069,725.19/3,140.64
  6. Step 6: Final answer
    x = 1,932.64

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.