Home / 5,402-8,103-1,298

Finding the Fourth Proportional to 5,402, 8,103 and 1,298

Calculator

Solution

The fourth proportional to 5,402, 8,103 and 1,298 is: 1,947

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,402 : 8,103 = 1,298 : x
  2. Step 2: Convert to fraction form
    5,402/8,103 = 1,298/x
  3. Step 3: Cross multiply
    5,402x = 8,103 × 1,298
  4. Step 4: Simplify right side
    5,402x = 10,517,694
  5. Step 5: Solve for x
    x = 10,517,694/5,402
  6. Step 6: Final answer
    x = 1,947

Related Problems

Find fourth proportional to 2,701, 4,051.50 and 649
Half scale
Find fourth proportional to 10,804, 16,206 and 2,596
Double scale
Find fourth proportional to 5,403, 8,104.50 and 1,299
Similar ratio
Find fourth proportional to 8,103, 12,154.50 and 1,947
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.