Home / 2,485.12-3,429.44-1,423.07

Finding the Fourth Proportional to 2,485.12, 3,429.44 and 1,423.07

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Solution

The fourth proportional to 2,485.12, 3,429.44 and 1,423.07 is: 1,963.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,485.12 : 3,429.44 = 1,423.07 : x
  2. Step 2: Convert to fraction form
    2,485.12/3,429.44 = 1,423.07/x
  3. Step 3: Cross multiply
    2,485.12x = 3,429.44 × 1,423.07
  4. Step 4: Simplify right side
    2,485.12x = 4,880,333.18
  5. Step 5: Solve for x
    x = 4,880,333.18/2,485.12
  6. Step 6: Final answer
    x = 1,963.83

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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.