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Finding the Fourth Proportional to 2,903.80, 4,006.95 and 1,784.80

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Solution

The fourth proportional to 2,903.80, 4,006.95 and 1,784.80 is: 2,462.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,903.80 : 4,006.95 = 1,784.80 : x
  2. Step 2: Convert to fraction form
    2,903.80/4,006.95 = 1,784.80/x
  3. Step 3: Cross multiply
    2,903.80x = 4,006.95 × 1,784.80
  4. Step 4: Simplify right side
    2,903.80x = 7,151,604.36
  5. Step 5: Solve for x
    x = 7,151,604.36/2,903.80
  6. Step 6: Final answer
    x = 2,462.84

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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.