Home / 1,445.40-2,158.20-1,251

Finding the Fourth Proportional to 1,445.40, 2,158.20 and 1,251

Calculator

Solution

The fourth proportional to 1,445.40, 2,158.20 and 1,251 is: 1,867.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,445.40 : 2,158.20 = 1,251 : x
  2. Step 2: Convert to fraction form
    1,445.40/2,158.20 = 1,251/x
  3. Step 3: Cross multiply
    1,445.40x = 2,158.20 × 1,251
  4. Step 4: Simplify right side
    1,445.40x = 2,699,908.20
  5. Step 5: Solve for x
    x = 2,699,908.20/1,445.40
  6. Step 6: Final answer
    x = 1,867.93

Related Problems

Find fourth proportional to 722.70, 1,079.10 and 625.50
Half scale
Find fourth proportional to 2,890.80, 4,316.40 and 2,502
Double scale
Find fourth proportional to 1,446.40, 2,159.69 and 1,252
Similar ratio
Find fourth proportional to 2,168.10, 3,237.30 and 1,876.50
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.