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Finding the Fourth Proportional to 3,137.99, 4,328.87 and 1,810.89

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Solution

The fourth proportional to 3,137.99, 4,328.87 and 1,810.89 is: 2,498.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,137.99 : 4,328.87 = 1,810.89 : x
  2. Step 2: Convert to fraction form
    3,137.99/4,328.87 = 1,810.89/x
  3. Step 3: Cross multiply
    3,137.99x = 4,328.87 × 1,810.89
  4. Step 4: Simplify right side
    3,137.99x = 7,839,098.34
  5. Step 5: Solve for x
    x = 7,839,098.34/3,137.99
  6. Step 6: Final answer
    x = 2,498.13

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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.