Home / 3,904.36-5,388-2,136

Finding the Fourth Proportional to 3,904.36, 5,388 and 2,136

Calculator

Solution

The fourth proportional to 3,904.36, 5,388 and 2,136 is: 2,947.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,904.36 : 5,388 = 2,136 : x
  2. Step 2: Convert to fraction form
    3,904.36/5,388 = 2,136/x
  3. Step 3: Cross multiply
    3,904.36x = 5,388 × 2,136
  4. Step 4: Simplify right side
    3,904.36x = 11,508,768
  5. Step 5: Solve for x
    x = 11,508,768/3,904.36
  6. Step 6: Final answer
    x = 2,947.67

Related Problems

Find fourth proportional to 1,952.18, 2,694 and 1,068
Half scale
Find fourth proportional to 7,808.72, 10,776 and 4,272
Double scale
Find fourth proportional to 3,905.36, 5,389.38 and 2,137
Similar ratio
Find fourth proportional to 5,856.54, 8,082 and 3,204
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.