Home / 8,715.63-12,029.46-5,361.30

Finding the Fourth Proportional to 8,715.63, 12,029.46 and 5,361.30

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Solution

The fourth proportional to 8,715.63, 12,029.46 and 5,361.30 is: 7,399.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,715.63 : 12,029.46 = 5,361.30 : x
  2. Step 2: Convert to fraction form
    8,715.63/12,029.46 = 5,361.30/x
  3. Step 3: Cross multiply
    8,715.63x = 12,029.46 × 5,361.30
  4. Step 4: Simplify right side
    8,715.63x = 64,493,543.90
  5. Step 5: Solve for x
    x = 64,493,543.90/8,715.63
  6. Step 6: Final answer
    x = 7,399.76

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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.