Home / 6,980.15-10,470.78-1,982.57

Finding the Fourth Proportional to 6,980.15, 10,470.78 and 1,982.57

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Solution

The fourth proportional to 6,980.15, 10,470.78 and 1,982.57 is: 2,974.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,980.15 : 10,470.78 = 1,982.57 : x
  2. Step 2: Convert to fraction form
    6,980.15/10,470.78 = 1,982.57/x
  3. Step 3: Cross multiply
    6,980.15x = 10,470.78 × 1,982.57
  4. Step 4: Simplify right side
    6,980.15x = 20,759,001.95
  5. Step 5: Solve for x
    x = 20,759,001.95/6,980.15
  6. Step 6: Final answer
    x = 2,974.00

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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.