Home / 1,370.30-2,051.40-1,208.30

Finding the Fourth Proportional to 1,370.30, 2,051.40 and 1,208.30

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Solution

The fourth proportional to 1,370.30, 2,051.40 and 1,208.30 is: 1,808.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,370.30 : 2,051.40 = 1,208.30 : x
  2. Step 2: Convert to fraction form
    1,370.30/2,051.40 = 1,208.30/x
  3. Step 3: Cross multiply
    1,370.30x = 2,051.40 × 1,208.30
  4. Step 4: Simplify right side
    1,370.30x = 2,478,706.62
  5. Step 5: Solve for x
    x = 2,478,706.62/1,370.30
  6. Step 6: Final answer
    x = 1,808.88

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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.