Home / 1,385.31-2,077.97-654.51

Finding the Fourth Proportional to 1,385.31, 2,077.97 and 654.51

Calculator

Solution

The fourth proportional to 1,385.31, 2,077.97 and 654.51 is: 981.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,385.31 : 2,077.97 = 654.51 : x
  2. Step 2: Convert to fraction form
    1,385.31/2,077.97 = 654.51/x
  3. Step 3: Cross multiply
    1,385.31x = 2,077.97 × 654.51
  4. Step 4: Simplify right side
    1,385.31x = 1,360,048.87
  5. Step 5: Solve for x
    x = 1,360,048.87/1,385.31
  6. Step 6: Final answer
    x = 981.77

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.