Home / 7,980.66-11,973.36-4,087.80

Finding the Fourth Proportional to 7,980.66, 11,973.36 and 4,087.80

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Solution

The fourth proportional to 7,980.66, 11,973.36 and 4,087.80 is: 6,132.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,980.66 : 11,973.36 = 4,087.80 : x
  2. Step 2: Convert to fraction form
    7,980.66/11,973.36 = 4,087.80/x
  3. Step 3: Cross multiply
    7,980.66x = 11,973.36 × 4,087.80
  4. Step 4: Simplify right side
    7,980.66x = 48,944,701.01
  5. Step 5: Solve for x
    x = 48,944,701.01/7,980.66
  6. Step 6: Final answer
    x = 6,132.91

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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.