Home / 7,828.83-11,743.25-1,985.47

Finding the Fourth Proportional to 7,828.83, 11,743.25 and 1,985.47

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Solution

The fourth proportional to 7,828.83, 11,743.25 and 1,985.47 is: 2,978.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,828.83 : 11,743.25 = 1,985.47 : x
  2. Step 2: Convert to fraction form
    7,828.83/11,743.25 = 1,985.47/x
  3. Step 3: Cross multiply
    7,828.83x = 11,743.25 × 1,985.47
  4. Step 4: Simplify right side
    7,828.83x = 23,315,860.65
  5. Step 5: Solve for x
    x = 23,315,860.65/7,828.83
  6. Step 6: Final answer
    x = 2,978.21

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1.5x scale

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.