Home / 3,856.08-5,782.76-1,390.25

Finding the Fourth Proportional to 3,856.08, 5,782.76 and 1,390.25

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Solution

The fourth proportional to 3,856.08, 5,782.76 and 1,390.25 is: 2,084.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,856.08 : 5,782.76 = 1,390.25 : x
  2. Step 2: Convert to fraction form
    3,856.08/5,782.76 = 1,390.25/x
  3. Step 3: Cross multiply
    3,856.08x = 5,782.76 × 1,390.25
  4. Step 4: Simplify right side
    3,856.08x = 8,039,446.22
  5. Step 5: Solve for x
    x = 8,039,446.22/3,856.08
  6. Step 6: Final answer
    x = 2,084.88

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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.