Home / 1,407.52-1,942-910.45

Finding the Fourth Proportional to 1,407.52, 1,942 and 910.45

Calculator

Solution

The fourth proportional to 1,407.52, 1,942 and 910.45 is: 1,256.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,407.52 : 1,942 = 910.45 : x
  2. Step 2: Convert to fraction form
    1,407.52/1,942 = 910.45/x
  3. Step 3: Cross multiply
    1,407.52x = 1,942 × 910.45
  4. Step 4: Simplify right side
    1,407.52x = 1,768,093.90
  5. Step 5: Solve for x
    x = 1,768,093.90/1,407.52
  6. Step 6: Final answer
    x = 1,256.18

Related Problems

Find fourth proportional to 703.76, 971 and 455.23
Half scale
Find fourth proportional to 2,815.04, 3,884 and 1,820.90
Double scale
Find fourth proportional to 1,408.52, 1,943.38 and 911.45
Similar ratio
Find fourth proportional to 2,111.28, 2,913 and 1,365.68
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.