Home / 3,685.12-5,079.52-2,887.08

Finding the Fourth Proportional to 3,685.12, 5,079.52 and 2,887.08

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Solution

The fourth proportional to 3,685.12, 5,079.52 and 2,887.08 is: 3,979.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,685.12 : 5,079.52 = 2,887.08 : x
  2. Step 2: Convert to fraction form
    3,685.12/5,079.52 = 2,887.08/x
  3. Step 3: Cross multiply
    3,685.12x = 5,079.52 × 2,887.08
  4. Step 4: Simplify right side
    3,685.12x = 14,664,980.60
  5. Step 5: Solve for x
    x = 14,664,980.60/3,685.12
  6. Step 6: Final answer
    x = 3,979.51

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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.