Home / 3,312.16-4,568.64-2,131.36

Finding the Fourth Proportional to 3,312.16, 4,568.64 and 2,131.36

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Solution

The fourth proportional to 3,312.16, 4,568.64 and 2,131.36 is: 2,939.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,312.16 : 4,568.64 = 2,131.36 : x
  2. Step 2: Convert to fraction form
    3,312.16/4,568.64 = 2,131.36/x
  3. Step 3: Cross multiply
    3,312.16x = 4,568.64 × 2,131.36
  4. Step 4: Simplify right side
    3,312.16x = 9,737,416.55
  5. Step 5: Solve for x
    x = 9,737,416.55/3,312.16
  6. Step 6: Final answer
    x = 2,939.90

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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.