Home / 1,574.88-2,172-977.10

Finding the Fourth Proportional to 1,574.88, 2,172 and 977.10

Calculator

Solution

The fourth proportional to 1,574.88, 2,172 and 977.10 is: 1,347.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,574.88 : 2,172 = 977.10 : x
  2. Step 2: Convert to fraction form
    1,574.88/2,172 = 977.10/x
  3. Step 3: Cross multiply
    1,574.88x = 2,172 × 977.10
  4. Step 4: Simplify right side
    1,574.88x = 2,122,261.20
  5. Step 5: Solve for x
    x = 2,122,261.20/1,574.88
  6. Step 6: Final answer
    x = 1,347.57

Related Problems

Find fourth proportional to 787.44, 1,086 and 488.55
Half scale
Find fourth proportional to 3,149.76, 4,344 and 1,954.20
Double scale
Find fourth proportional to 1,575.88, 2,173.38 and 978.10
Similar ratio
Find fourth proportional to 2,362.32, 3,258 and 1,465.65
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.