Home / 7,977.60-11,980.80-5,788.80

Finding the Fourth Proportional to 7,977.60, 11,980.80 and 5,788.80

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Solution

The fourth proportional to 7,977.60, 11,980.80 and 5,788.80 is: 8,693.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,977.60 : 11,980.80 = 5,788.80 : x
  2. Step 2: Convert to fraction form
    7,977.60/11,980.80 = 5,788.80/x
  3. Step 3: Cross multiply
    7,977.60x = 11,980.80 × 5,788.80
  4. Step 4: Simplify right side
    7,977.60x = 69,354,455.04
  5. Step 5: Solve for x
    x = 69,354,455.04/7,977.60
  6. Step 6: Final answer
    x = 8,693.65

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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.