Home / 3,546.64-5,315.74-1,985.76

Finding the Fourth Proportional to 3,546.64, 5,315.74 and 1,985.76

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Solution

The fourth proportional to 3,546.64, 5,315.74 and 1,985.76 is: 2,976.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,546.64 : 5,315.74 = 1,985.76 : x
  2. Step 2: Convert to fraction form
    3,546.64/5,315.74 = 1,985.76/x
  3. Step 3: Cross multiply
    3,546.64x = 5,315.74 × 1,985.76
  4. Step 4: Simplify right side
    3,546.64x = 10,555,783.86
  5. Step 5: Solve for x
    x = 10,555,783.86/3,546.64
  6. Step 6: Final answer
    x = 2,976.28

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.