Home / 1,781.66-2,453.59-1,283.51

Finding the Fourth Proportional to 1,781.66, 2,453.59 and 1,283.51

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Solution

The fourth proportional to 1,781.66, 2,453.59 and 1,283.51 is: 1,767.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,781.66 : 2,453.59 = 1,283.51 : x
  2. Step 2: Convert to fraction form
    1,781.66/2,453.59 = 1,283.51/x
  3. Step 3: Cross multiply
    1,781.66x = 2,453.59 × 1,283.51
  4. Step 4: Simplify right side
    1,781.66x = 3,149,215.04
  5. Step 5: Solve for x
    x = 3,149,215.04/1,781.66
  6. Step 6: Final answer
    x = 1,767.57

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1.5x scale

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.