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Finding the Fourth Proportional to 4,788.63, 7,172.01 and 4,307.49

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Solution

The fourth proportional to 4,788.63, 7,172.01 and 4,307.49 is: 6,451.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,788.63 : 7,172.01 = 4,307.49 : x
  2. Step 2: Convert to fraction form
    4,788.63/7,172.01 = 4,307.49/x
  3. Step 3: Cross multiply
    4,788.63x = 7,172.01 × 4,307.49
  4. Step 4: Simplify right side
    4,788.63x = 30,893,361.35
  5. Step 5: Solve for x
    x = 30,893,361.35/4,788.63
  6. Step 6: Final answer
    x = 6,451.40

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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.