Home / 3,290.80-4,540.86-2,113.46

Finding the Fourth Proportional to 3,290.80, 4,540.86 and 2,113.46

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Solution

The fourth proportional to 3,290.80, 4,540.86 and 2,113.46 is: 2,916.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,290.80 : 4,540.86 = 2,113.46 : x
  2. Step 2: Convert to fraction form
    3,290.80/4,540.86 = 2,113.46/x
  3. Step 3: Cross multiply
    3,290.80x = 4,540.86 × 2,113.46
  4. Step 4: Simplify right side
    3,290.80x = 9,596,915.41
  5. Step 5: Solve for x
    x = 9,596,915.41/3,290.80
  6. Step 6: Final answer
    x = 2,916.29

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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.