Home / 2,287-3,430.50-748

Finding the Fourth Proportional to 2,287, 3,430.50 and 748

Calculator

Solution

The fourth proportional to 2,287, 3,430.50 and 748 is: 1,122

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,287 : 3,430.50 = 748 : x
  2. Step 2: Convert to fraction form
    2,287/3,430.50 = 748/x
  3. Step 3: Cross multiply
    2,287x = 3,430.50 × 748
  4. Step 4: Simplify right side
    2,287x = 2,566,014
  5. Step 5: Solve for x
    x = 2,566,014/2,287
  6. Step 6: Final answer
    x = 1,122

Related Problems

Find fourth proportional to 1,143.50, 1,715.25 and 374
Half scale
Find fourth proportional to 4,574, 6,861 and 1,496
Double scale
Find fourth proportional to 2,288, 3,432 and 749
Similar ratio
Find fourth proportional to 3,430.50, 5,145.75 and 1,122
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.