Home / 1,239.84-1,856.71-589

Finding the Fourth Proportional to 1,239.84, 1,856.71 and 589

Calculator

Solution

The fourth proportional to 1,239.84, 1,856.71 and 589 is: 882.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,239.84 : 1,856.71 = 589 : x
  2. Step 2: Convert to fraction form
    1,239.84/1,856.71 = 589/x
  3. Step 3: Cross multiply
    1,239.84x = 1,856.71 × 589
  4. Step 4: Simplify right side
    1,239.84x = 1,093,602.19
  5. Step 5: Solve for x
    x = 1,093,602.19/1,239.84
  6. Step 6: Final answer
    x = 882.05

Related Problems

Find fourth proportional to 619.92, 928.36 and 294.50
Half scale
Find fourth proportional to 2,479.68, 3,713.42 and 1,178
Double scale
Find fourth proportional to 1,240.84, 1,858.21 and 590
Similar ratio
Find fourth proportional to 1,859.76, 2,785.07 and 883.50
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.