Home / 3,920.12-5,880.27-1,323.05

Finding the Fourth Proportional to 3,920.12, 5,880.27 and 1,323.05

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Solution

The fourth proportional to 3,920.12, 5,880.27 and 1,323.05 is: 1,984.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,920.12 : 5,880.27 = 1,323.05 : x
  2. Step 2: Convert to fraction form
    3,920.12/5,880.27 = 1,323.05/x
  3. Step 3: Cross multiply
    3,920.12x = 5,880.27 × 1,323.05
  4. Step 4: Simplify right side
    3,920.12x = 7,779,861.82
  5. Step 5: Solve for x
    x = 7,779,861.82/3,920.12
  6. Step 6: Final answer
    x = 1,984.60

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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.