Home / 3,128-4,692-1,076

Finding the Fourth Proportional to 3,128, 4,692 and 1,076

Calculator

Solution

The fourth proportional to 3,128, 4,692 and 1,076 is: 1,614

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,128 : 4,692 = 1,076 : x
  2. Step 2: Convert to fraction form
    3,128/4,692 = 1,076/x
  3. Step 3: Cross multiply
    3,128x = 4,692 × 1,076
  4. Step 4: Simplify right side
    3,128x = 5,048,592
  5. Step 5: Solve for x
    x = 5,048,592/3,128
  6. Step 6: Final answer
    x = 1,614

Related Problems

Find fourth proportional to 1,564, 2,346 and 538
Half scale
Find fourth proportional to 6,256, 9,384 and 2,152
Double scale
Find fourth proportional to 3,129, 4,693.50 and 1,077
Similar ratio
Find fourth proportional to 4,692, 7,038 and 1,614
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.