Home / 3,915.90-5,403.86-2,423.43

Finding the Fourth Proportional to 3,915.90, 5,403.86 and 2,423.43

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Solution

The fourth proportional to 3,915.90, 5,403.86 and 2,423.43 is: 3,344.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,915.90 : 5,403.86 = 2,423.43 : x
  2. Step 2: Convert to fraction form
    3,915.90/5,403.86 = 2,423.43/x
  3. Step 3: Cross multiply
    3,915.90x = 5,403.86 × 2,423.43
  4. Step 4: Simplify right side
    3,915.90x = 13,095,864.32
  5. Step 5: Solve for x
    x = 13,095,864.32/3,915.90
  6. Step 6: Final answer
    x = 3,344.28

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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.