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Finding the Fourth Proportional to 2,995.44, 4,492.28 and 915.28

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Solution

The fourth proportional to 2,995.44, 4,492.28 and 915.28 is: 1,372.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,995.44 : 4,492.28 = 915.28 : x
  2. Step 2: Convert to fraction form
    2,995.44/4,492.28 = 915.28/x
  3. Step 3: Cross multiply
    2,995.44x = 4,492.28 × 915.28
  4. Step 4: Simplify right side
    2,995.44x = 4,111,694.04
  5. Step 5: Solve for x
    x = 4,111,694.04/2,995.44
  6. Step 6: Final answer
    x = 1,372.65

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.