Home / 1,298.64-1,791-1,182

Finding the Fourth Proportional to 1,298.64, 1,791 and 1,182

Calculator

Solution

The fourth proportional to 1,298.64, 1,791 and 1,182 is: 1,630.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,298.64 : 1,791 = 1,182 : x
  2. Step 2: Convert to fraction form
    1,298.64/1,791 = 1,182/x
  3. Step 3: Cross multiply
    1,298.64x = 1,791 × 1,182
  4. Step 4: Simplify right side
    1,298.64x = 2,116,962
  5. Step 5: Solve for x
    x = 2,116,962/1,298.64
  6. Step 6: Final answer
    x = 1,630.14

Related Problems

Find fourth proportional to 649.32, 895.50 and 591
Half scale
Find fourth proportional to 2,597.28, 3,582 and 2,364
Double scale
Find fourth proportional to 1,299.64, 1,792.38 and 1,183
Similar ratio
Find fourth proportional to 1,947.96, 2,686.50 and 1,773
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.