Home / 2,159.09-2,979.47-1,214.93

Finding the Fourth Proportional to 2,159.09, 2,979.47 and 1,214.93

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Solution

The fourth proportional to 2,159.09, 2,979.47 and 1,214.93 is: 1,676.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,159.09 : 2,979.47 = 1,214.93 : x
  2. Step 2: Convert to fraction form
    2,159.09/2,979.47 = 1,214.93/x
  3. Step 3: Cross multiply
    2,159.09x = 2,979.47 × 1,214.93
  4. Step 4: Simplify right side
    2,159.09x = 3,619,846.80
  5. Step 5: Solve for x
    x = 3,619,846.80/2,159.09
  6. Step 6: Final answer
    x = 1,676.57

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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.