Home / 2,485.18-3,429.08-1,423.12

Finding the Fourth Proportional to 2,485.18, 3,429.08 and 1,423.12

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Solution

The fourth proportional to 2,485.18, 3,429.08 and 1,423.12 is: 1,963.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,485.18 : 3,429.08 = 1,423.12 : x
  2. Step 2: Convert to fraction form
    2,485.18/3,429.08 = 1,423.12/x
  3. Step 3: Cross multiply
    2,485.18x = 3,429.08 × 1,423.12
  4. Step 4: Simplify right side
    2,485.18x = 4,879,996.41
  5. Step 5: Solve for x
    x = 4,879,996.41/2,485.18
  6. Step 6: Final answer
    x = 1,963.64

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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.