Home / 6,440-9,660-1,576

Finding the Fourth Proportional to 6,440, 9,660 and 1,576

Calculator

Solution

The fourth proportional to 6,440, 9,660 and 1,576 is: 2,364

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,440 : 9,660 = 1,576 : x
  2. Step 2: Convert to fraction form
    6,440/9,660 = 1,576/x
  3. Step 3: Cross multiply
    6,440x = 9,660 × 1,576
  4. Step 4: Simplify right side
    6,440x = 15,224,160
  5. Step 5: Solve for x
    x = 15,224,160/6,440
  6. Step 6: Final answer
    x = 2,364

Related Problems

Find fourth proportional to 3,220, 4,830 and 788
Half scale
Find fourth proportional to 12,880, 19,320 and 3,152
Double scale
Find fourth proportional to 6,441, 9,661.50 and 1,577
Similar ratio
Find fourth proportional to 9,660, 14,490 and 2,364
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.