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Finding the Fourth Proportional to 2,763.03, 4,144.75 and 915.45

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Solution

The fourth proportional to 2,763.03, 4,144.75 and 915.45 is: 1,373.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,763.03 : 4,144.75 = 915.45 : x
  2. Step 2: Convert to fraction form
    2,763.03/4,144.75 = 915.45/x
  3. Step 3: Cross multiply
    2,763.03x = 4,144.75 × 915.45
  4. Step 4: Simplify right side
    2,763.03x = 3,794,311.39
  5. Step 5: Solve for x
    x = 3,794,311.39/2,763.03
  6. Step 6: Final answer
    x = 1,373.25

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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.