Home / 8,715.64-12,029.44-5,361.28

Finding the Fourth Proportional to 8,715.64, 12,029.44 and 5,361.28

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Solution

The fourth proportional to 8,715.64, 12,029.44 and 5,361.28 is: 7,399.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,715.64 : 12,029.44 = 5,361.28 : x
  2. Step 2: Convert to fraction form
    8,715.64/12,029.44 = 5,361.28/x
  3. Step 3: Cross multiply
    8,715.64x = 12,029.44 × 5,361.28
  4. Step 4: Simplify right side
    8,715.64x = 64,493,196.08
  5. Step 5: Solve for x
    x = 64,493,196.08/8,715.64
  6. Step 6: Final answer
    x = 7,399.71

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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.