Home / 1,915.32-2,647.90-1,619.94

Finding the Fourth Proportional to 1,915.32, 2,647.90 and 1,619.94

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Solution

The fourth proportional to 1,915.32, 2,647.90 and 1,619.94 is: 2,239.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,915.32 : 2,647.90 = 1,619.94 : x
  2. Step 2: Convert to fraction form
    1,915.32/2,647.90 = 1,619.94/x
  3. Step 3: Cross multiply
    1,915.32x = 2,647.90 × 1,619.94
  4. Step 4: Simplify right side
    1,915.32x = 4,289,439.13
  5. Step 5: Solve for x
    x = 4,289,439.13/1,915.32
  6. Step 6: Final answer
    x = 2,239.54

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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.