Home / 1,784.70-2,461.91-1,217.39

Finding the Fourth Proportional to 1,784.70, 2,461.91 and 1,217.39

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Solution

The fourth proportional to 1,784.70, 2,461.91 and 1,217.39 is: 1,679.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,784.70 : 2,461.91 = 1,217.39 : x
  2. Step 2: Convert to fraction form
    1,784.70/2,461.91 = 1,217.39/x
  3. Step 3: Cross multiply
    1,784.70x = 2,461.91 × 1,217.39
  4. Step 4: Simplify right side
    1,784.70x = 2,997,086.22
  5. Step 5: Solve for x
    x = 2,997,086.22/1,784.70
  6. Step 6: Final answer
    x = 1,679.32

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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.