Home / 1,283.40-1,926-959.40

Finding the Fourth Proportional to 1,283.40, 1,926 and 959.40

Calculator

Solution

The fourth proportional to 1,283.40, 1,926 and 959.40 is: 1,439.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,283.40 : 1,926 = 959.40 : x
  2. Step 2: Convert to fraction form
    1,283.40/1,926 = 959.40/x
  3. Step 3: Cross multiply
    1,283.40x = 1,926 × 959.40
  4. Step 4: Simplify right side
    1,283.40x = 1,847,804.40
  5. Step 5: Solve for x
    x = 1,847,804.40/1,283.40
  6. Step 6: Final answer
    x = 1,439.77

Related Problems

Find fourth proportional to 641.70, 963 and 479.70
Half scale
Find fourth proportional to 2,566.80, 3,852 and 1,918.80
Double scale
Find fourth proportional to 1,284.40, 1,927.50 and 960.40
Similar ratio
Find fourth proportional to 1,925.10, 2,889 and 1,439.10
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.