Home / 3,487.26-4,812.42-1,915.45

Finding the Fourth Proportional to 3,487.26, 4,812.42 and 1,915.45

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Solution

The fourth proportional to 3,487.26, 4,812.42 and 1,915.45 is: 2,643.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,487.26 : 4,812.42 = 1,915.45 : x
  2. Step 2: Convert to fraction form
    3,487.26/4,812.42 = 1,915.45/x
  3. Step 3: Cross multiply
    3,487.26x = 4,812.42 × 1,915.45
  4. Step 4: Simplify right side
    3,487.26x = 9,217,949.89
  5. Step 5: Solve for x
    x = 9,217,949.89/3,487.26
  6. Step 6: Final answer
    x = 2,643.32

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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.