Home / 3,072.64-4,239.70-1,813.60

Finding the Fourth Proportional to 3,072.64, 4,239.70 and 1,813.60

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Solution

The fourth proportional to 3,072.64, 4,239.70 and 1,813.60 is: 2,502.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,072.64 : 4,239.70 = 1,813.60 : x
  2. Step 2: Convert to fraction form
    3,072.64/4,239.70 = 1,813.60/x
  3. Step 3: Cross multiply
    3,072.64x = 4,239.70 × 1,813.60
  4. Step 4: Simplify right side
    3,072.64x = 7,689,119.92
  5. Step 5: Solve for x
    x = 7,689,119.92/3,072.64
  6. Step 6: Final answer
    x = 2,502.45

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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.