Home / 2,750.60-4,125.90-902

Finding the Fourth Proportional to 2,750.60, 4,125.90 and 902

Calculator

Solution

The fourth proportional to 2,750.60, 4,125.90 and 902 is: 1,353

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,750.60 : 4,125.90 = 902 : x
  2. Step 2: Convert to fraction form
    2,750.60/4,125.90 = 902/x
  3. Step 3: Cross multiply
    2,750.60x = 4,125.90 × 902
  4. Step 4: Simplify right side
    2,750.60x = 3,721,561.80
  5. Step 5: Solve for x
    x = 3,721,561.80/2,750.60
  6. Step 6: Final answer
    x = 1,353

Related Problems

Find fourth proportional to 1,375.30, 2,062.95 and 451
Half scale
Find fourth proportional to 5,501.20, 8,251.80 and 1,804
Double scale
Find fourth proportional to 2,751.60, 4,127.40 and 903
Similar ratio
Find fourth proportional to 4,125.90, 6,188.85 and 1,353
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.