Home / 1,491.28-2,058-901.68

Finding the Fourth Proportional to 1,491.28, 2,058 and 901.68

Calculator

Solution

The fourth proportional to 1,491.28, 2,058 and 901.68 is: 1,244.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,491.28 : 2,058 = 901.68 : x
  2. Step 2: Convert to fraction form
    1,491.28/2,058 = 901.68/x
  3. Step 3: Cross multiply
    1,491.28x = 2,058 × 901.68
  4. Step 4: Simplify right side
    1,491.28x = 1,855,657.44
  5. Step 5: Solve for x
    x = 1,855,657.44/1,491.28
  6. Step 6: Final answer
    x = 1,244.34

Related Problems

Find fourth proportional to 745.64, 1,029 and 450.84
Half scale
Find fourth proportional to 2,982.56, 4,116 and 1,803.36
Double scale
Find fourth proportional to 1,492.28, 2,059.38 and 902.68
Similar ratio
Find fourth proportional to 2,236.92, 3,087 and 1,352.52
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.