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Finding the Fourth Proportional to 1,685.01, 2,526.37 and 862.61

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Solution

The fourth proportional to 1,685.01, 2,526.37 and 862.61 is: 1,293.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,685.01 : 2,526.37 = 862.61 : x
  2. Step 2: Convert to fraction form
    1,685.01/2,526.37 = 862.61/x
  3. Step 3: Cross multiply
    1,685.01x = 2,526.37 × 862.61
  4. Step 4: Simplify right side
    1,685.01x = 2,179,276.19
  5. Step 5: Solve for x
    x = 2,179,276.19/1,685.01
  6. Step 6: Final answer
    x = 1,293.33

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.