Home / 1,975.04-2,730.48-1,728.80

Finding the Fourth Proportional to 1,975.04, 2,730.48 and 1,728.80

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Solution

The fourth proportional to 1,975.04, 2,730.48 and 1,728.80 is: 2,390.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,975.04 : 2,730.48 = 1,728.80 : x
  2. Step 2: Convert to fraction form
    1,975.04/2,730.48 = 1,728.80/x
  3. Step 3: Cross multiply
    1,975.04x = 2,730.48 × 1,728.80
  4. Step 4: Simplify right side
    1,975.04x = 4,720,453.82
  5. Step 5: Solve for x
    x = 4,720,453.82/1,975.04
  6. Step 6: Final answer
    x = 2,390.05

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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.