Home / 1,312.50-1,968.39-491.10

Finding the Fourth Proportional to 1,312.50, 1,968.39 and 491.10

Calculator

Solution

The fourth proportional to 1,312.50, 1,968.39 and 491.10 is: 736.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,312.50 : 1,968.39 = 491.10 : x
  2. Step 2: Convert to fraction form
    1,312.50/1,968.39 = 491.10/x
  3. Step 3: Cross multiply
    1,312.50x = 1,968.39 × 491.10
  4. Step 4: Simplify right side
    1,312.50x = 966,676.33
  5. Step 5: Solve for x
    x = 966,676.33/1,312.50
  6. Step 6: Final answer
    x = 736.52

Related Problems

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.