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Finding the Fourth Proportional to 4,939.38, 7,409.61 and 1,607.99

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Solution

The fourth proportional to 4,939.38, 7,409.61 and 1,607.99 is: 2,412.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,939.38 : 7,409.61 = 1,607.99 : x
  2. Step 2: Convert to fraction form
    4,939.38/7,409.61 = 1,607.99/x
  3. Step 3: Cross multiply
    4,939.38x = 7,409.61 × 1,607.99
  4. Step 4: Simplify right side
    4,939.38x = 11,914,541.74
  5. Step 5: Solve for x
    x = 11,914,541.74/4,939.38
  6. Step 6: Final answer
    x = 2,412.15

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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.