Home / 2,015.40-3,040.95-1,986.60

Finding the Fourth Proportional to 2,015.40, 3,040.95 and 1,986.60

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Solution

The fourth proportional to 2,015.40, 3,040.95 and 1,986.60 is: 2,997.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,015.40 : 3,040.95 = 1,986.60 : x
  2. Step 2: Convert to fraction form
    2,015.40/3,040.95 = 1,986.60/x
  3. Step 3: Cross multiply
    2,015.40x = 3,040.95 × 1,986.60
  4. Step 4: Simplify right side
    2,015.40x = 6,041,151.27
  5. Step 5: Solve for x
    x = 6,041,151.27/2,015.40
  6. Step 6: Final answer
    x = 2,997.49

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.