Home / 1,986.28-2,980.56-832

Finding the Fourth Proportional to 1,986.28, 2,980.56 and 832

Calculator

Solution

The fourth proportional to 1,986.28, 2,980.56 and 832 is: 1,248.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,986.28 : 2,980.56 = 832 : x
  2. Step 2: Convert to fraction form
    1,986.28/2,980.56 = 832/x
  3. Step 3: Cross multiply
    1,986.28x = 2,980.56 × 832
  4. Step 4: Simplify right side
    1,986.28x = 2,479,825.92
  5. Step 5: Solve for x
    x = 2,479,825.92/1,986.28
  6. Step 6: Final answer
    x = 1,248.48

Related Problems

Find fourth proportional to 993.14, 1,490.28 and 416
Half scale
Find fourth proportional to 3,972.56, 5,961.12 and 1,664
Double scale
Find fourth proportional to 1,987.28, 2,982.06 and 833
Similar ratio
Find fourth proportional to 2,979.42, 4,470.84 and 1,248
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.