Home / 4,878.64-6,729.63-2,991.07

Finding the Fourth Proportional to 4,878.64, 6,729.63 and 2,991.07

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Solution

The fourth proportional to 4,878.64, 6,729.63 and 2,991.07 is: 4,125.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,878.64 : 6,729.63 = 2,991.07 : x
  2. Step 2: Convert to fraction form
    4,878.64/6,729.63 = 2,991.07/x
  3. Step 3: Cross multiply
    4,878.64x = 6,729.63 × 2,991.07
  4. Step 4: Simplify right side
    4,878.64x = 20,128,794.40
  5. Step 5: Solve for x
    x = 20,128,794.40/4,878.64
  6. Step 6: Final answer
    x = 4,125.90

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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.