Home / 1,915.28-2,643.30-1,254.05

Finding the Fourth Proportional to 1,915.28, 2,643.30 and 1,254.05

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Solution

The fourth proportional to 1,915.28, 2,643.30 and 1,254.05 is: 1,730.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,915.28 : 2,643.30 = 1,254.05 : x
  2. Step 2: Convert to fraction form
    1,915.28/2,643.30 = 1,254.05/x
  3. Step 3: Cross multiply
    1,915.28x = 2,643.30 × 1,254.05
  4. Step 4: Simplify right side
    1,915.28x = 3,314,830.37
  5. Step 5: Solve for x
    x = 3,314,830.37/1,915.28
  6. Step 6: Final answer
    x = 1,730.73

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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.