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Finding the Fourth Proportional to 2,898.63, 4,000.19 and 1,719.81

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Solution

The fourth proportional to 2,898.63, 4,000.19 and 1,719.81 is: 2,373.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,898.63 : 4,000.19 = 1,719.81 : x
  2. Step 2: Convert to fraction form
    2,898.63/4,000.19 = 1,719.81/x
  3. Step 3: Cross multiply
    2,898.63x = 4,000.19 × 1,719.81
  4. Step 4: Simplify right side
    2,898.63x = 6,879,558.16
  5. Step 5: Solve for x
    x = 6,879,558.16/2,898.63
  6. Step 6: Final answer
    x = 2,373.38

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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.