Home / 2,784.74-3,842.67-1,665.45

Finding the Fourth Proportional to 2,784.74, 3,842.67 and 1,665.45

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Solution

The fourth proportional to 2,784.74, 3,842.67 and 1,665.45 is: 2,298.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,784.74 : 3,842.67 = 1,665.45 : x
  2. Step 2: Convert to fraction form
    2,784.74/3,842.67 = 1,665.45/x
  3. Step 3: Cross multiply
    2,784.74x = 3,842.67 × 1,665.45
  4. Step 4: Simplify right side
    2,784.74x = 6,399,774.75
  5. Step 5: Solve for x
    x = 6,399,774.75/2,784.74
  6. Step 6: Final answer
    x = 2,298.16

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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.