Home / 2,773.75-4,158.45-1,386.40

Finding the Fourth Proportional to 2,773.75, 4,158.45 and 1,386.40

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Solution

The fourth proportional to 2,773.75, 4,158.45 and 1,386.40 is: 2,078.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,773.75 : 4,158.45 = 1,386.40 : x
  2. Step 2: Convert to fraction form
    2,773.75/4,158.45 = 1,386.40/x
  3. Step 3: Cross multiply
    2,773.75x = 4,158.45 × 1,386.40
  4. Step 4: Simplify right side
    2,773.75x = 5,765,275.08
  5. Step 5: Solve for x
    x = 5,765,275.08/2,773.75
  6. Step 6: Final answer
    x = 2,078.51

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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.