Home / 1,528.84-2,109.08-939.16

Finding the Fourth Proportional to 1,528.84, 2,109.08 and 939.16

Calculator

Solution

The fourth proportional to 1,528.84, 2,109.08 and 939.16 is: 1,295.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,528.84 : 2,109.08 = 939.16 : x
  2. Step 2: Convert to fraction form
    1,528.84/2,109.08 = 939.16/x
  3. Step 3: Cross multiply
    1,528.84x = 2,109.08 × 939.16
  4. Step 4: Simplify right side
    1,528.84x = 1,980,763.57
  5. Step 5: Solve for x
    x = 1,980,763.57/1,528.84
  6. Step 6: Final answer
    x = 1,295.60

Related Problems

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.