Home / 3,720.77-5,133.75-2,148.86

Finding the Fourth Proportional to 3,720.77, 5,133.75 and 2,148.86

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Solution

The fourth proportional to 3,720.77, 5,133.75 and 2,148.86 is: 2,964.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,720.77 : 5,133.75 = 2,148.86 : x
  2. Step 2: Convert to fraction form
    3,720.77/5,133.75 = 2,148.86/x
  3. Step 3: Cross multiply
    3,720.77x = 5,133.75 × 2,148.86
  4. Step 4: Simplify right side
    3,720.77x = 11,031,684.36
  5. Step 5: Solve for x
    x = 11,031,684.36/3,720.77
  6. Step 6: Final answer
    x = 2,964.90

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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.