Home / 7,971.78-11,957.66-2,774

Finding the Fourth Proportional to 7,971.78, 11,957.66 and 2,774

Calculator

Solution

The fourth proportional to 7,971.78, 11,957.66 and 2,774 is: 4,161.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,971.78 : 11,957.66 = 2,774 : x
  2. Step 2: Convert to fraction form
    7,971.78/11,957.66 = 2,774/x
  3. Step 3: Cross multiply
    7,971.78x = 11,957.66 × 2,774
  4. Step 4: Simplify right side
    7,971.78x = 33,170,548.84
  5. Step 5: Solve for x
    x = 33,170,548.84/7,971.78
  6. Step 6: Final answer
    x = 4,161.00

Related Problems

Find fourth proportional to 3,985.89, 5,978.83 and 1,387
Half scale
Find fourth proportional to 15,943.56, 23,915.32 and 5,548
Double scale
Find fourth proportional to 7,972.78, 11,959.16 and 2,775
Similar ratio
Find fourth proportional to 11,957.67, 17,936.49 and 4,161
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.