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Finding the Fourth Proportional to 1,707.68, 2,357.18 and 1,079.26

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Solution

The fourth proportional to 1,707.68, 2,357.18 and 1,079.26 is: 1,489.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,707.68 : 2,357.18 = 1,079.26 : x
  2. Step 2: Convert to fraction form
    1,707.68/2,357.18 = 1,079.26/x
  3. Step 3: Cross multiply
    1,707.68x = 2,357.18 × 1,079.26
  4. Step 4: Simplify right side
    1,707.68x = 2,544,009.75
  5. Step 5: Solve for x
    x = 2,544,009.75/1,707.68
  6. Step 6: Final answer
    x = 1,489.74

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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.