Home / 2,986.48-4,122.06-1,807.72

Finding the Fourth Proportional to 2,986.48, 4,122.06 and 1,807.72

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Solution

The fourth proportional to 2,986.48, 4,122.06 and 1,807.72 is: 2,495.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,986.48 : 4,122.06 = 1,807.72 : x
  2. Step 2: Convert to fraction form
    2,986.48/4,122.06 = 1,807.72/x
  3. Step 3: Cross multiply
    2,986.48x = 4,122.06 × 1,807.72
  4. Step 4: Simplify right side
    2,986.48x = 7,451,530.30
  5. Step 5: Solve for x
    x = 7,451,530.30/2,986.48
  6. Step 6: Final answer
    x = 2,495.09

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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.