Home / 1,400.04-1,927.62-1,189.80

Finding the Fourth Proportional to 1,400.04, 1,927.62 and 1,189.80

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Solution

The fourth proportional to 1,400.04, 1,927.62 and 1,189.80 is: 1,638.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,400.04 : 1,927.62 = 1,189.80 : x
  2. Step 2: Convert to fraction form
    1,400.04/1,927.62 = 1,189.80/x
  3. Step 3: Cross multiply
    1,400.04x = 1,927.62 × 1,189.80
  4. Step 4: Simplify right side
    1,400.04x = 2,293,482.28
  5. Step 5: Solve for x
    x = 2,293,482.28/1,400.04
  6. Step 6: Final answer
    x = 1,638.15

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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.