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Finding the Fourth Proportional to 1,875.72, 2,589.75 and 1,435.89

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Solution

The fourth proportional to 1,875.72, 2,589.75 and 1,435.89 is: 1,982.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,875.72 : 2,589.75 = 1,435.89 : x
  2. Step 2: Convert to fraction form
    1,875.72/2,589.75 = 1,435.89/x
  3. Step 3: Cross multiply
    1,875.72x = 2,589.75 × 1,435.89
  4. Step 4: Simplify right side
    1,875.72x = 3,718,596.13
  5. Step 5: Solve for x
    x = 3,718,596.13/1,875.72
  6. Step 6: Final answer
    x = 1,982.49

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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.