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Finding the Fourth Proportional to 2,666.21, 4,000.53 and 1,368.59

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Solution

The fourth proportional to 2,666.21, 4,000.53 and 1,368.59 is: 2,053.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,666.21 : 4,000.53 = 1,368.59 : x
  2. Step 2: Convert to fraction form
    2,666.21/4,000.53 = 1,368.59/x
  3. Step 3: Cross multiply
    2,666.21x = 4,000.53 × 1,368.59
  4. Step 4: Simplify right side
    2,666.21x = 5,475,085.35
  5. Step 5: Solve for x
    x = 5,475,085.35/2,666.21
  6. Step 6: Final answer
    x = 2,053.51

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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.