Home / 3,312.28-4,570.68-1,915.12

Finding the Fourth Proportional to 3,312.28, 4,570.68 and 1,915.12

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Solution

The fourth proportional to 3,312.28, 4,570.68 and 1,915.12 is: 2,642.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,312.28 : 4,570.68 = 1,915.12 : x
  2. Step 2: Convert to fraction form
    3,312.28/4,570.68 = 1,915.12/x
  3. Step 3: Cross multiply
    3,312.28x = 4,570.68 × 1,915.12
  4. Step 4: Simplify right side
    3,312.28x = 8,753,400.68
  5. Step 5: Solve for x
    x = 8,753,400.68/3,312.28
  6. Step 6: Final answer
    x = 2,642.71

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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.