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Finding the Fourth Proportional to 1,686.62, 2,328.52 and 1,066.46

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Solution

The fourth proportional to 1,686.62, 2,328.52 and 1,066.46 is: 1,472.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,686.62 : 2,328.52 = 1,066.46 : x
  2. Step 2: Convert to fraction form
    1,686.62/2,328.52 = 1,066.46/x
  3. Step 3: Cross multiply
    1,686.62x = 2,328.52 × 1,066.46
  4. Step 4: Simplify right side
    1,686.62x = 2,483,259.13
  5. Step 5: Solve for x
    x = 2,483,259.13/1,686.62
  6. Step 6: Final answer
    x = 1,472.33

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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.