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Finding the Fourth Proportional to 4,812.40, 7,264.78 and 4,763.80

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Solution

The fourth proportional to 4,812.40, 7,264.78 and 4,763.80 is: 7,191.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,812.40 : 7,264.78 = 4,763.80 : x
  2. Step 2: Convert to fraction form
    4,812.40/7,264.78 = 4,763.80/x
  3. Step 3: Cross multiply
    4,812.40x = 7,264.78 × 4,763.80
  4. Step 4: Simplify right side
    4,812.40x = 34,607,958.96
  5. Step 5: Solve for x
    x = 34,607,958.96/4,812.40
  6. Step 6: Final answer
    x = 7,191.41

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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.