Home / 3,698.32-5,108.25-2,688.45

Finding the Fourth Proportional to 3,698.32, 5,108.25 and 2,688.45

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Solution

The fourth proportional to 3,698.32, 5,108.25 and 2,688.45 is: 3,713.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,698.32 : 5,108.25 = 2,688.45 : x
  2. Step 2: Convert to fraction form
    3,698.32/5,108.25 = 2,688.45/x
  3. Step 3: Cross multiply
    3,698.32x = 5,108.25 × 2,688.45
  4. Step 4: Simplify right side
    3,698.32x = 13,733,274.71
  5. Step 5: Solve for x
    x = 13,733,274.71/3,698.32
  6. Step 6: Final answer
    x = 3,713.38

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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.