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Finding the Fourth Proportional to 7,469, 10,307.46 and 4,111.64

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Solution

The fourth proportional to 7,469, 10,307.46 and 4,111.64 is: 5,674.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,469 : 10,307.46 = 4,111.64 : x
  2. Step 2: Convert to fraction form
    7,469/10,307.46 = 4,111.64/x
  3. Step 3: Cross multiply
    7,469x = 10,307.46 × 4,111.64
  4. Step 4: Simplify right side
    7,469x = 42,380,564.83
  5. Step 5: Solve for x
    x = 42,380,564.83/7,469
  6. Step 6: Final answer
    x = 5,674.20

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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.