Home / 1,485.80-2,228.70-1,429.10

Finding the Fourth Proportional to 1,485.80, 2,228.70 and 1,429.10

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Solution

The fourth proportional to 1,485.80, 2,228.70 and 1,429.10 is: 2,143.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,485.80 : 2,228.70 = 1,429.10 : x
  2. Step 2: Convert to fraction form
    1,485.80/2,228.70 = 1,429.10/x
  3. Step 3: Cross multiply
    1,485.80x = 2,228.70 × 1,429.10
  4. Step 4: Simplify right side
    1,485.80x = 3,185,035.17
  5. Step 5: Solve for x
    x = 3,185,035.17/1,485.80
  6. Step 6: Final answer
    x = 2,143.65

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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.