Home / 7,823.90-11,736.26-1,980.56

Finding the Fourth Proportional to 7,823.90, 11,736.26 and 1,980.56

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Solution

The fourth proportional to 7,823.90, 11,736.26 and 1,980.56 is: 2,970.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,823.90 : 11,736.26 = 1,980.56 : x
  2. Step 2: Convert to fraction form
    7,823.90/11,736.26 = 1,980.56/x
  3. Step 3: Cross multiply
    7,823.90x = 11,736.26 × 1,980.56
  4. Step 4: Simplify right side
    7,823.90x = 23,244,298.52
  5. Step 5: Solve for x
    x = 23,244,298.52/7,823.90
  6. Step 6: Final answer
    x = 2,970.94

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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.