Home / 1,214.56-1,676-748.80

Finding the Fourth Proportional to 1,214.56, 1,676 and 748.80

Calculator

Solution

The fourth proportional to 1,214.56, 1,676 and 748.80 is: 1,033.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,214.56 : 1,676 = 748.80 : x
  2. Step 2: Convert to fraction form
    1,214.56/1,676 = 748.80/x
  3. Step 3: Cross multiply
    1,214.56x = 1,676 × 748.80
  4. Step 4: Simplify right side
    1,214.56x = 1,254,988.80
  5. Step 5: Solve for x
    x = 1,254,988.80/1,214.56
  6. Step 6: Final answer
    x = 1,033.29

Related Problems

Find fourth proportional to 607.28, 838 and 374.40
Half scale
Find fourth proportional to 2,429.12, 3,352 and 1,497.60
Double scale
Find fourth proportional to 1,215.56, 1,677.38 and 749.80
Similar ratio
Find fourth proportional to 1,821.84, 2,514 and 1,123.20
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.