Home / 3,720.71-5,134.54-2,148.77

Finding the Fourth Proportional to 3,720.71, 5,134.54 and 2,148.77

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Solution

The fourth proportional to 3,720.71, 5,134.54 and 2,148.77 is: 2,965.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,720.71 : 5,134.54 = 2,148.77 : x
  2. Step 2: Convert to fraction form
    3,720.71/5,134.54 = 2,148.77/x
  3. Step 3: Cross multiply
    3,720.71x = 5,134.54 × 2,148.77
  4. Step 4: Simplify right side
    3,720.71x = 11,032,945.52
  5. Step 5: Solve for x
    x = 11,032,945.52/3,720.71
  6. Step 6: Final answer
    x = 2,965.28

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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.