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Finding the Fourth Proportional to 2,668.68, 3,681.72 and 1,783.08

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Solution

The fourth proportional to 2,668.68, 3,681.72 and 1,783.08 is: 2,459.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,668.68 : 3,681.72 = 1,783.08 : x
  2. Step 2: Convert to fraction form
    2,668.68/3,681.72 = 1,783.08/x
  3. Step 3: Cross multiply
    2,668.68x = 3,681.72 × 1,783.08
  4. Step 4: Simplify right side
    2,668.68x = 6,564,801.30
  5. Step 5: Solve for x
    x = 6,564,801.30/2,668.68
  6. Step 6: Final answer
    x = 2,459.94

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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.