Home / 1,368.08-2,051.80-1,331.60

Finding the Fourth Proportional to 1,368.08, 2,051.80 and 1,331.60

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Solution

The fourth proportional to 1,368.08, 2,051.80 and 1,331.60 is: 1,997.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,368.08 : 2,051.80 = 1,331.60 : x
  2. Step 2: Convert to fraction form
    1,368.08/2,051.80 = 1,331.60/x
  3. Step 3: Cross multiply
    1,368.08x = 2,051.80 × 1,331.60
  4. Step 4: Simplify right side
    1,368.08x = 2,732,176.88
  5. Step 5: Solve for x
    x = 2,732,176.88/1,368.08
  6. Step 6: Final answer
    x = 1,997.09

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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.