Home / 8,399.02-12,598.29-2,158.78

Finding the Fourth Proportional to 8,399.02, 12,598.29 and 2,158.78

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Solution

The fourth proportional to 8,399.02, 12,598.29 and 2,158.78 is: 3,238.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,399.02 : 12,598.29 = 2,158.78 : x
  2. Step 2: Convert to fraction form
    8,399.02/12,598.29 = 2,158.78/x
  3. Step 3: Cross multiply
    8,399.02x = 12,598.29 × 2,158.78
  4. Step 4: Simplify right side
    8,399.02x = 27,196,936.49
  5. Step 5: Solve for x
    x = 27,196,936.49/8,399.02
  6. Step 6: Final answer
    x = 3,238.11

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.