Home / 3,939.84-5,438.08-2,284.16

Finding the Fourth Proportional to 3,939.84, 5,438.08 and 2,284.16

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Solution

The fourth proportional to 3,939.84, 5,438.08 and 2,284.16 is: 3,152.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,939.84 : 5,438.08 = 2,284.16 : x
  2. Step 2: Convert to fraction form
    3,939.84/5,438.08 = 2,284.16/x
  3. Step 3: Cross multiply
    3,939.84x = 5,438.08 × 2,284.16
  4. Step 4: Simplify right side
    3,939.84x = 12,421,444.81
  5. Step 5: Solve for x
    x = 12,421,444.81/3,939.84
  6. Step 6: Final answer
    x = 3,152.78

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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.