Home / 7,980.18-11,959.32-4,076.40

Finding the Fourth Proportional to 7,980.18, 11,959.32 and 4,076.40

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Solution

The fourth proportional to 7,980.18, 11,959.32 and 4,076.40 is: 6,109.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,980.18 : 11,959.32 = 4,076.40 : x
  2. Step 2: Convert to fraction form
    7,980.18/11,959.32 = 4,076.40/x
  3. Step 3: Cross multiply
    7,980.18x = 11,959.32 × 4,076.40
  4. Step 4: Simplify right side
    7,980.18x = 48,750,972.05
  5. Step 5: Solve for x
    x = 48,750,972.05/7,980.18
  6. Step 6: Final answer
    x = 6,109.01

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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.