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Finding the Fourth Proportional to 7,124.78, 10,676.16 and 4,937.78

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Solution

The fourth proportional to 7,124.78, 10,676.16 and 4,937.78 is: 7,399.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,124.78 : 10,676.16 = 4,937.78 : x
  2. Step 2: Convert to fraction form
    7,124.78/10,676.16 = 4,937.78/x
  3. Step 3: Cross multiply
    7,124.78x = 10,676.16 × 4,937.78
  4. Step 4: Simplify right side
    7,124.78x = 52,716,529.32
  5. Step 5: Solve for x
    x = 52,716,529.32/7,124.78
  6. Step 6: Final answer
    x = 7,399.04

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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.