Home / 2,807.49-4,211.25-1,342.20

Finding the Fourth Proportional to 2,807.49, 4,211.25 and 1,342.20

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Solution

The fourth proportional to 2,807.49, 4,211.25 and 1,342.20 is: 2,013.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,807.49 : 4,211.25 = 1,342.20 : x
  2. Step 2: Convert to fraction form
    2,807.49/4,211.25 = 1,342.20/x
  3. Step 3: Cross multiply
    2,807.49x = 4,211.25 × 1,342.20
  4. Step 4: Simplify right side
    2,807.49x = 5,652,339.75
  5. Step 5: Solve for x
    x = 5,652,339.75/2,807.49
  6. Step 6: Final answer
    x = 2,013.31

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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.