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Finding the Fourth Proportional to 7,230.03, 9,979.10 and 4,707.75

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Solution

The fourth proportional to 7,230.03, 9,979.10 and 4,707.75 is: 6,497.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,230.03 : 9,979.10 = 4,707.75 : x
  2. Step 2: Convert to fraction form
    7,230.03/9,979.10 = 4,707.75/x
  3. Step 3: Cross multiply
    7,230.03x = 9,979.10 × 4,707.75
  4. Step 4: Simplify right side
    7,230.03x = 46,979,108.03
  5. Step 5: Solve for x
    x = 46,979,108.03/7,230.03
  6. Step 6: Final answer
    x = 6,497.77

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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.