Home / 3,943.72-5,915.70-1,635.40

Finding the Fourth Proportional to 3,943.72, 5,915.70 and 1,635.40

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Solution

The fourth proportional to 3,943.72, 5,915.70 and 1,635.40 is: 2,453.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,943.72 : 5,915.70 = 1,635.40 : x
  2. Step 2: Convert to fraction form
    3,943.72/5,915.70 = 1,635.40/x
  3. Step 3: Cross multiply
    3,943.72x = 5,915.70 × 1,635.40
  4. Step 4: Simplify right side
    3,943.72x = 9,674,535.78
  5. Step 5: Solve for x
    x = 9,674,535.78/3,943.72
  6. Step 6: Final answer
    x = 2,453.15

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1.5x scale

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.