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Finding the Fourth Proportional to 6,979.84, 9,632.64 and 4,883.20

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Solution

The fourth proportional to 6,979.84, 9,632.64 and 4,883.20 is: 6,739.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,979.84 : 9,632.64 = 4,883.20 : x
  2. Step 2: Convert to fraction form
    6,979.84/9,632.64 = 4,883.20/x
  3. Step 3: Cross multiply
    6,979.84x = 9,632.64 × 4,883.20
  4. Step 4: Simplify right side
    6,979.84x = 47,038,107.65
  5. Step 5: Solve for x
    x = 47,038,107.65/6,979.84
  6. Step 6: Final answer
    x = 6,739.14

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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.