Home / 2,135.48-2,947.23-1,296.51

Finding the Fourth Proportional to 2,135.48, 2,947.23 and 1,296.51

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Solution

The fourth proportional to 2,135.48, 2,947.23 and 1,296.51 is: 1,789.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,135.48 : 2,947.23 = 1,296.51 : x
  2. Step 2: Convert to fraction form
    2,135.48/2,947.23 = 1,296.51/x
  3. Step 3: Cross multiply
    2,135.48x = 2,947.23 × 1,296.51
  4. Step 4: Simplify right side
    2,135.48x = 3,821,113.17
  5. Step 5: Solve for x
    x = 3,821,113.17/2,135.48
  6. Step 6: Final answer
    x = 1,789.35

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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.