Home / 3,312.78-4,571.37-1,915.62

Finding the Fourth Proportional to 3,312.78, 4,571.37 and 1,915.62

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Solution

The fourth proportional to 3,312.78, 4,571.37 and 1,915.62 is: 2,643.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,312.78 : 4,571.37 = 1,915.62 : x
  2. Step 2: Convert to fraction form
    3,312.78/4,571.37 = 1,915.62/x
  3. Step 3: Cross multiply
    3,312.78x = 4,571.37 × 1,915.62
  4. Step 4: Simplify right side
    3,312.78x = 8,757,007.80
  5. Step 5: Solve for x
    x = 8,757,007.80/3,312.78
  6. Step 6: Final answer
    x = 2,643.40

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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.