Home / 3,108.51-4,289.84-1,782.46

Finding the Fourth Proportional to 3,108.51, 4,289.84 and 1,782.46

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Solution

The fourth proportional to 3,108.51, 4,289.84 and 1,782.46 is: 2,459.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,108.51 : 4,289.84 = 1,782.46 : x
  2. Step 2: Convert to fraction form
    3,108.51/4,289.84 = 1,782.46/x
  3. Step 3: Cross multiply
    3,108.51x = 4,289.84 × 1,782.46
  4. Step 4: Simplify right side
    3,108.51x = 7,646,468.21
  5. Step 5: Solve for x
    x = 7,646,468.21/3,108.51
  6. Step 6: Final answer
    x = 2,459.85

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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.