Home / 3,845.79-5,307.19-2,077.40

Finding the Fourth Proportional to 3,845.79, 5,307.19 and 2,077.40

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Solution

The fourth proportional to 3,845.79, 5,307.19 and 2,077.40 is: 2,866.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,845.79 : 5,307.19 = 2,077.40 : x
  2. Step 2: Convert to fraction form
    3,845.79/5,307.19 = 2,077.40/x
  3. Step 3: Cross multiply
    3,845.79x = 5,307.19 × 2,077.40
  4. Step 4: Simplify right side
    3,845.79x = 11,025,132.57
  5. Step 5: Solve for x
    x = 11,025,132.57/3,845.79
  6. Step 6: Final answer
    x = 2,866.81

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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.