Home / 3,521.86-4,856.08-2,856.64

Finding the Fourth Proportional to 3,521.86, 4,856.08 and 2,856.64

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Solution

The fourth proportional to 3,521.86, 4,856.08 and 2,856.64 is: 3,938.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,521.86 : 4,856.08 = 2,856.64 : x
  2. Step 2: Convert to fraction form
    3,521.86/4,856.08 = 2,856.64/x
  3. Step 3: Cross multiply
    3,521.86x = 4,856.08 × 2,856.64
  4. Step 4: Simplify right side
    3,521.86x = 13,872,072.37
  5. Step 5: Solve for x
    x = 13,872,072.37/3,521.86
  6. Step 6: Final answer
    x = 3,938.85

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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.