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Finding the Fourth Proportional to 2,975.40, 4,480.02 and 2,630.88

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Solution

The fourth proportional to 2,975.40, 4,480.02 and 2,630.88 is: 3,961.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,975.40 : 4,480.02 = 2,630.88 : x
  2. Step 2: Convert to fraction form
    2,975.40/4,480.02 = 2,630.88/x
  3. Step 3: Cross multiply
    2,975.40x = 4,480.02 × 2,630.88
  4. Step 4: Simplify right side
    2,975.40x = 11,786,395.02
  5. Step 5: Solve for x
    x = 11,786,395.02/2,975.40
  6. Step 6: Final answer
    x = 3,961.28

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.