Home / 1,917.51-2,646.06-1,078.35

Finding the Fourth Proportional to 1,917.51, 2,646.06 and 1,078.35

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Solution

The fourth proportional to 1,917.51, 2,646.06 and 1,078.35 is: 1,488.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,917.51 : 2,646.06 = 1,078.35 : x
  2. Step 2: Convert to fraction form
    1,917.51/2,646.06 = 1,078.35/x
  3. Step 3: Cross multiply
    1,917.51x = 2,646.06 × 1,078.35
  4. Step 4: Simplify right side
    1,917.51x = 2,853,378.80
  5. Step 5: Solve for x
    x = 2,853,378.80/1,917.51
  6. Step 6: Final answer
    x = 1,488.06

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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.