Home / 1,159.39-1,600-635.42

Finding the Fourth Proportional to 1,159.39, 1,600 and 635.42

Calculator

Solution

The fourth proportional to 1,159.39, 1,600 and 635.42 is: 876.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,159.39 : 1,600 = 635.42 : x
  2. Step 2: Convert to fraction form
    1,159.39/1,600 = 635.42/x
  3. Step 3: Cross multiply
    1,159.39x = 1,600 × 635.42
  4. Step 4: Simplify right side
    1,159.39x = 1,016,672.00
  5. Step 5: Solve for x
    x = 1,016,672.00/1,159.39
  6. Step 6: Final answer
    x = 876.90

Related Problems

Find fourth proportional to 579.70, 800 and 317.71
Half scale
Find fourth proportional to 2,318.78, 3,200 and 1,270.84
Double scale
Find fourth proportional to 1,160.39, 1,601.38 and 636.42
Similar ratio
Find fourth proportional to 1,739.09, 2,400 and 953.13
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.