Home / 3,820.32-5,280.86-3,187.16

Finding the Fourth Proportional to 3,820.32, 5,280.86 and 3,187.16

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Solution

The fourth proportional to 3,820.32, 5,280.86 and 3,187.16 is: 4,405.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,820.32 : 5,280.86 = 3,187.16 : x
  2. Step 2: Convert to fraction form
    3,820.32/5,280.86 = 3,187.16/x
  3. Step 3: Cross multiply
    3,820.32x = 5,280.86 × 3,187.16
  4. Step 4: Simplify right side
    3,820.32x = 16,830,903.42
  5. Step 5: Solve for x
    x = 16,830,903.42/3,820.32
  6. Step 6: Final answer
    x = 4,405.63

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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.