Home / 3,122.90-4,307.63-2,005.26

Finding the Fourth Proportional to 3,122.90, 4,307.63 and 2,005.26

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Solution

The fourth proportional to 3,122.90, 4,307.63 and 2,005.26 is: 2,765.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,122.90 : 4,307.63 = 2,005.26 : x
  2. Step 2: Convert to fraction form
    3,122.90/4,307.63 = 2,005.26/x
  3. Step 3: Cross multiply
    3,122.90x = 4,307.63 × 2,005.26
  4. Step 4: Simplify right side
    3,122.90x = 8,637,903.23
  5. Step 5: Solve for x
    x = 8,637,903.23/3,122.90
  6. Step 6: Final answer
    x = 2,765.98

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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.