Home / 2,780.04-3,837.84-1,837.20

Finding the Fourth Proportional to 2,780.04, 3,837.84 and 1,837.20

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Solution

The fourth proportional to 2,780.04, 3,837.84 and 1,837.20 is: 2,536.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,780.04 : 3,837.84 = 1,837.20 : x
  2. Step 2: Convert to fraction form
    2,780.04/3,837.84 = 1,837.20/x
  3. Step 3: Cross multiply
    2,780.04x = 3,837.84 × 1,837.20
  4. Step 4: Simplify right side
    2,780.04x = 7,050,879.65
  5. Step 5: Solve for x
    x = 7,050,879.65/2,780.04
  6. Step 6: Final answer
    x = 2,536.25

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1.5x scale

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.