Home / 1,975.65-2,727.18-1,189.50

Finding the Fourth Proportional to 1,975.65, 2,727.18 and 1,189.50

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Solution

The fourth proportional to 1,975.65, 2,727.18 and 1,189.50 is: 1,641.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,975.65 : 2,727.18 = 1,189.50 : x
  2. Step 2: Convert to fraction form
    1,975.65/2,727.18 = 1,189.50/x
  3. Step 3: Cross multiply
    1,975.65x = 2,727.18 × 1,189.50
  4. Step 4: Simplify right side
    1,975.65x = 3,243,980.61
  5. Step 5: Solve for x
    x = 3,243,980.61/1,975.65
  6. Step 6: Final answer
    x = 1,641.98

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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.