Home / 1,777.02-2,452.32-990.99

Finding the Fourth Proportional to 1,777.02, 2,452.32 and 990.99

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Solution

The fourth proportional to 1,777.02, 2,452.32 and 990.99 is: 1,367.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,777.02 : 2,452.32 = 990.99 : x
  2. Step 2: Convert to fraction form
    1,777.02/2,452.32 = 990.99/x
  3. Step 3: Cross multiply
    1,777.02x = 2,452.32 × 990.99
  4. Step 4: Simplify right side
    1,777.02x = 2,430,224.60
  5. Step 5: Solve for x
    x = 2,430,224.60/1,777.02
  6. Step 6: Final answer
    x = 1,367.58

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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.