Home / 987.93-1,362.47-673.71

Finding the Fourth Proportional to 987.93, 1,362.47 and 673.71

Calculator

Solution

The fourth proportional to 987.93, 1,362.47 and 673.71 is: 929.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    987.93 : 1,362.47 = 673.71 : x
  2. Step 2: Convert to fraction form
    987.93/1,362.47 = 673.71/x
  3. Step 3: Cross multiply
    987.93x = 1,362.47 × 673.71
  4. Step 4: Simplify right side
    987.93x = 917,902.85
  5. Step 5: Solve for x
    x = 917,902.85/987.93
  6. Step 6: Final answer
    x = 929.12

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.