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Finding the Fourth Proportional to 2,668.04, 4,002.08 and 1,368.80

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Solution

The fourth proportional to 2,668.04, 4,002.08 and 1,368.80 is: 2,053.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,668.04 : 4,002.08 = 1,368.80 : x
  2. Step 2: Convert to fraction form
    2,668.04/4,002.08 = 1,368.80/x
  3. Step 3: Cross multiply
    2,668.04x = 4,002.08 × 1,368.80
  4. Step 4: Simplify right side
    2,668.04x = 5,478,047.10
  5. Step 5: Solve for x
    x = 5,478,047.10/2,668.04
  6. Step 6: Final answer
    x = 2,053.21

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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.