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Finding the Fourth Proportional to 4,672, 7,008 and 2,620.16

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Solution

The fourth proportional to 4,672, 7,008 and 2,620.16 is: 3,930.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,672 : 7,008 = 2,620.16 : x
  2. Step 2: Convert to fraction form
    4,672/7,008 = 2,620.16/x
  3. Step 3: Cross multiply
    4,672x = 7,008 × 2,620.16
  4. Step 4: Simplify right side
    4,672x = 18,362,081.28
  5. Step 5: Solve for x
    x = 18,362,081.28/4,672
  6. Step 6: Final answer
    x = 3,930.24

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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.