Home / 3,311.68-4,570.68-1,915.28

Finding the Fourth Proportional to 3,311.68, 4,570.68 and 1,915.28

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Solution

The fourth proportional to 3,311.68, 4,570.68 and 1,915.28 is: 2,643.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,311.68 : 4,570.68 = 1,915.28 : x
  2. Step 2: Convert to fraction form
    3,311.68/4,570.68 = 1,915.28/x
  3. Step 3: Cross multiply
    3,311.68x = 4,570.68 × 1,915.28
  4. Step 4: Simplify right side
    3,311.68x = 8,754,131.99
  5. Step 5: Solve for x
    x = 8,754,131.99/3,311.68
  6. Step 6: Final answer
    x = 2,643.41

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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.