Home / 1,920.94-2,647.40-1,323.47

Finding the Fourth Proportional to 1,920.94, 2,647.40 and 1,323.47

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Solution

The fourth proportional to 1,920.94, 2,647.40 and 1,323.47 is: 1,823.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,920.94 : 2,647.40 = 1,323.47 : x
  2. Step 2: Convert to fraction form
    1,920.94/2,647.40 = 1,323.47/x
  3. Step 3: Cross multiply
    1,920.94x = 2,647.40 × 1,323.47
  4. Step 4: Simplify right side
    1,920.94x = 3,503,744.55
  5. Step 5: Solve for x
    x = 3,503,744.55/1,920.94
  6. Step 6: Final answer
    x = 1,823.98

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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.