Home / 2,730.80-4,089.72-1,948.88

Finding the Fourth Proportional to 2,730.80, 4,089.72 and 1,948.88

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Solution

The fourth proportional to 2,730.80, 4,089.72 and 1,948.88 is: 2,918.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,730.80 : 4,089.72 = 1,948.88 : x
  2. Step 2: Convert to fraction form
    2,730.80/4,089.72 = 1,948.88/x
  3. Step 3: Cross multiply
    2,730.80x = 4,089.72 × 1,948.88
  4. Step 4: Simplify right side
    2,730.80x = 7,970,373.51
  5. Step 5: Solve for x
    x = 7,970,373.51/2,730.80
  6. Step 6: Final answer
    x = 2,918.70

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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.