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Finding the Fourth Proportional to 2,903.91, 4,005.79 and 1,839.72

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Solution

The fourth proportional to 2,903.91, 4,005.79 and 1,839.72 is: 2,537.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,903.91 : 4,005.79 = 1,839.72 : x
  2. Step 2: Convert to fraction form
    2,903.91/4,005.79 = 1,839.72/x
  3. Step 3: Cross multiply
    2,903.91x = 4,005.79 × 1,839.72
  4. Step 4: Simplify right side
    2,903.91x = 7,369,531.98
  5. Step 5: Solve for x
    x = 7,369,531.98/2,903.91
  6. Step 6: Final answer
    x = 2,537.80

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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.