Home / 3,122.12-4,307.06-1,862.46

Finding the Fourth Proportional to 3,122.12, 4,307.06 and 1,862.46

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Solution

The fourth proportional to 3,122.12, 4,307.06 and 1,862.46 is: 2,569.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,122.12 : 4,307.06 = 1,862.46 : x
  2. Step 2: Convert to fraction form
    3,122.12/4,307.06 = 1,862.46/x
  3. Step 3: Cross multiply
    3,122.12x = 4,307.06 × 1,862.46
  4. Step 4: Simplify right side
    3,122.12x = 8,021,731.62
  5. Step 5: Solve for x
    x = 8,021,731.62/3,122.12
  6. Step 6: Final answer
    x = 2,569.32

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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.