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Finding the Fourth Proportional to 1,875.29, 2,587.96 and 1,089.29

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Solution

The fourth proportional to 1,875.29, 2,587.96 and 1,089.29 is: 1,503.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,875.29 : 2,587.96 = 1,089.29 : x
  2. Step 2: Convert to fraction form
    1,875.29/2,587.96 = 1,089.29/x
  3. Step 3: Cross multiply
    1,875.29x = 2,587.96 × 1,089.29
  4. Step 4: Simplify right side
    1,875.29x = 2,819,048.14
  5. Step 5: Solve for x
    x = 2,819,048.14/1,875.29
  6. Step 6: Final answer
    x = 1,503.26

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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.