Home / 1,485.44-2,228.72-869.04

Finding the Fourth Proportional to 1,485.44, 2,228.72 and 869.04

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Solution

The fourth proportional to 1,485.44, 2,228.72 and 869.04 is: 1,303.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,485.44 : 2,228.72 = 869.04 : x
  2. Step 2: Convert to fraction form
    1,485.44/2,228.72 = 869.04/x
  3. Step 3: Cross multiply
    1,485.44x = 2,228.72 × 869.04
  4. Step 4: Simplify right side
    1,485.44x = 1,936,846.83
  5. Step 5: Solve for x
    x = 1,936,846.83/1,485.44
  6. Step 6: Final answer
    x = 1,303.89

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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.