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Finding the Fourth Proportional to 2,903.99, 4,005.77 and 1,856.05

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Solution

The fourth proportional to 2,903.99, 4,005.77 and 1,856.05 is: 2,560.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,903.99 : 4,005.77 = 1,856.05 : x
  2. Step 2: Convert to fraction form
    2,903.99/4,005.77 = 1,856.05/x
  3. Step 3: Cross multiply
    2,903.99x = 4,005.77 × 1,856.05
  4. Step 4: Simplify right side
    2,903.99x = 7,434,890.11
  5. Step 5: Solve for x
    x = 7,434,890.11/2,903.99
  6. Step 6: Final answer
    x = 2,560.24

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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.