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Finding the Fourth Proportional to 1,872.99, 2,583.41 and 1,210.59

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Solution

The fourth proportional to 1,872.99, 2,583.41 and 1,210.59 is: 1,669.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,872.99 : 2,583.41 = 1,210.59 : x
  2. Step 2: Convert to fraction form
    1,872.99/2,583.41 = 1,210.59/x
  3. Step 3: Cross multiply
    1,872.99x = 2,583.41 × 1,210.59
  4. Step 4: Simplify right side
    1,872.99x = 3,127,444.26
  5. Step 5: Solve for x
    x = 3,127,444.26/1,872.99
  6. Step 6: Final answer
    x = 1,669.76

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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.