Home / 2,784.60-4,173.30-1,139.19

Finding the Fourth Proportional to 2,784.60, 4,173.30 and 1,139.19

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Solution

The fourth proportional to 2,784.60, 4,173.30 and 1,139.19 is: 1,707.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,784.60 : 4,173.30 = 1,139.19 : x
  2. Step 2: Convert to fraction form
    2,784.60/4,173.30 = 1,139.19/x
  3. Step 3: Cross multiply
    2,784.60x = 4,173.30 × 1,139.19
  4. Step 4: Simplify right side
    2,784.60x = 4,754,181.63
  5. Step 5: Solve for x
    x = 4,754,181.63/2,784.60
  6. Step 6: Final answer
    x = 1,707.31

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.