Home / 847-1,166.16-808

Finding the Fourth Proportional to 847, 1,166.16 and 808

Calculator

Solution

The fourth proportional to 847, 1,166.16 and 808 is: 1,112.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    847 : 1,166.16 = 808 : x
  2. Step 2: Convert to fraction form
    847/1,166.16 = 808/x
  3. Step 3: Cross multiply
    847x = 1,166.16 × 808
  4. Step 4: Simplify right side
    847x = 942,257.28
  5. Step 5: Solve for x
    x = 942,257.28/847
  6. Step 6: Final answer
    x = 1,112.46

Related Problems

Find fourth proportional to 423.50, 583.08 and 404
Half scale
Find fourth proportional to 1,694, 2,332.32 and 1,616
Double scale
Find fourth proportional to 848, 1,167.54 and 809
Similar ratio
Find fourth proportional to 1,270.50, 1,749.24 and 1,212
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.