Home / 1,282.77-1,770.66-987.66

Finding the Fourth Proportional to 1,282.77, 1,770.66 and 987.66

Calculator

Solution

The fourth proportional to 1,282.77, 1,770.66 and 987.66 is: 1,363.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,282.77 : 1,770.66 = 987.66 : x
  2. Step 2: Convert to fraction form
    1,282.77/1,770.66 = 987.66/x
  3. Step 3: Cross multiply
    1,282.77x = 1,770.66 × 987.66
  4. Step 4: Simplify right side
    1,282.77x = 1,748,810.06
  5. Step 5: Solve for x
    x = 1,748,810.06/1,282.77
  6. Step 6: Final answer
    x = 1,363.31

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.