Home / 1,047.84-1,577.40-942

Finding the Fourth Proportional to 1,047.84, 1,577.40 and 942

Calculator

Solution

The fourth proportional to 1,047.84, 1,577.40 and 942 is: 1,418.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,047.84 : 1,577.40 = 942 : x
  2. Step 2: Convert to fraction form
    1,047.84/1,577.40 = 942/x
  3. Step 3: Cross multiply
    1,047.84x = 1,577.40 × 942
  4. Step 4: Simplify right side
    1,047.84x = 1,485,910.80
  5. Step 5: Solve for x
    x = 1,485,910.80/1,047.84
  6. Step 6: Final answer
    x = 1,418.07

Related Problems

Find fourth proportional to 523.92, 788.70 and 471
Half scale
Find fourth proportional to 2,095.68, 3,154.80 and 1,884
Double scale
Find fourth proportional to 1,048.84, 1,578.91 and 943
Similar ratio
Find fourth proportional to 1,571.76, 2,366.10 and 1,413
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.