Home / 2,521-3,781.50-982

Finding the Fourth Proportional to 2,521, 3,781.50 and 982

Calculator

Solution

The fourth proportional to 2,521, 3,781.50 and 982 is: 1,473

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,521 : 3,781.50 = 982 : x
  2. Step 2: Convert to fraction form
    2,521/3,781.50 = 982/x
  3. Step 3: Cross multiply
    2,521x = 3,781.50 × 982
  4. Step 4: Simplify right side
    2,521x = 3,713,433
  5. Step 5: Solve for x
    x = 3,713,433/2,521
  6. Step 6: Final answer
    x = 1,473

Related Problems

Find fourth proportional to 1,260.50, 1,890.75 and 491
Half scale
Find fourth proportional to 5,042, 7,563 and 1,964
Double scale
Find fourth proportional to 2,522, 3,783 and 983
Similar ratio
Find fourth proportional to 3,781.50, 5,672.25 and 1,473
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.