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Finding the Fourth Proportional to 7,616.57, 11,420.24 and 4,980.89

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Solution

The fourth proportional to 7,616.57, 11,420.24 and 4,980.89 is: 7,468.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,616.57 : 11,420.24 = 4,980.89 : x
  2. Step 2: Convert to fraction form
    7,616.57/11,420.24 = 4,980.89/x
  3. Step 3: Cross multiply
    7,616.57x = 11,420.24 × 4,980.89
  4. Step 4: Simplify right side
    7,616.57x = 56,882,990.88
  5. Step 5: Solve for x
    x = 56,882,990.88/7,616.57
  6. Step 6: Final answer
    x = 7,468.32

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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.