Home / 1,226.02-1,835.55-919.30

Finding the Fourth Proportional to 1,226.02, 1,835.55 and 919.30

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Solution

The fourth proportional to 1,226.02, 1,835.55 and 919.30 is: 1,376.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,226.02 : 1,835.55 = 919.30 : x
  2. Step 2: Convert to fraction form
    1,226.02/1,835.55 = 919.30/x
  3. Step 3: Cross multiply
    1,226.02x = 1,835.55 × 919.30
  4. Step 4: Simplify right side
    1,226.02x = 1,687,421.12
  5. Step 5: Solve for x
    x = 1,687,421.12/1,226.02
  6. Step 6: Final answer
    x = 1,376.34

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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.