Home / 1,306.87-1,803.45-717.40

Finding the Fourth Proportional to 1,306.87, 1,803.45 and 717.40

Calculator

Solution

The fourth proportional to 1,306.87, 1,803.45 and 717.40 is: 990.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,306.87 : 1,803.45 = 717.40 : x
  2. Step 2: Convert to fraction form
    1,306.87/1,803.45 = 717.40/x
  3. Step 3: Cross multiply
    1,306.87x = 1,803.45 × 717.40
  4. Step 4: Simplify right side
    1,306.87x = 1,293,795.03
  5. Step 5: Solve for x
    x = 1,293,795.03/1,306.87
  6. Step 6: Final answer
    x = 990.00

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.