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Finding the Fourth Proportional to 7,376.78, 10,179.83 and 4,019.63

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Solution

The fourth proportional to 7,376.78, 10,179.83 and 4,019.63 is: 5,547.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,376.78 : 10,179.83 = 4,019.63 : x
  2. Step 2: Convert to fraction form
    7,376.78/10,179.83 = 4,019.63/x
  3. Step 3: Cross multiply
    7,376.78x = 10,179.83 × 4,019.63
  4. Step 4: Simplify right side
    7,376.78x = 40,919,099.16
  5. Step 5: Solve for x
    x = 40,919,099.16/7,376.78
  6. Step 6: Final answer
    x = 5,547.01

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.