Home / 1,658.64-2,488-548.08

Finding the Fourth Proportional to 1,658.64, 2,488 and 548.08

Calculator

Solution

The fourth proportional to 1,658.64, 2,488 and 548.08 is: 822.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,658.64 : 2,488 = 548.08 : x
  2. Step 2: Convert to fraction form
    1,658.64/2,488 = 548.08/x
  3. Step 3: Cross multiply
    1,658.64x = 2,488 × 548.08
  4. Step 4: Simplify right side
    1,658.64x = 1,363,623.04
  5. Step 5: Solve for x
    x = 1,363,623.04/1,658.64
  6. Step 6: Final answer
    x = 822.13

Related Problems

Find fourth proportional to 829.32, 1,244 and 274.04
Half scale
Find fourth proportional to 3,317.28, 4,976 and 1,096.16
Double scale
Find fourth proportional to 1,659.64, 2,489.50 and 549.08
Similar ratio
Find fourth proportional to 2,487.96, 3,732 and 822.12
1.5x scale

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.