Home / 3,487.11-4,812.22-1,915.19

Finding the Fourth Proportional to 3,487.11, 4,812.22 and 1,915.19

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Solution

The fourth proportional to 3,487.11, 4,812.22 and 1,915.19 is: 2,642.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,487.11 : 4,812.22 = 1,915.19 : x
  2. Step 2: Convert to fraction form
    3,487.11/4,812.22 = 1,915.19/x
  3. Step 3: Cross multiply
    3,487.11x = 4,812.22 × 1,915.19
  4. Step 4: Simplify right side
    3,487.11x = 9,216,315.62
  5. Step 5: Solve for x
    x = 9,216,315.62/3,487.11
  6. Step 6: Final answer
    x = 2,642.97

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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.