Home / 1,946.60-2,686.57-1,238.51

Finding the Fourth Proportional to 1,946.60, 2,686.57 and 1,238.51

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Solution

The fourth proportional to 1,946.60, 2,686.57 and 1,238.51 is: 1,709.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,946.60 : 2,686.57 = 1,238.51 : x
  2. Step 2: Convert to fraction form
    1,946.60/2,686.57 = 1,238.51/x
  3. Step 3: Cross multiply
    1,946.60x = 2,686.57 × 1,238.51
  4. Step 4: Simplify right side
    1,946.60x = 3,327,347.43
  5. Step 5: Solve for x
    x = 3,327,347.43/1,946.60
  6. Step 6: Final answer
    x = 1,709.31

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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.