Home / 8,345.02-12,512.64-3,151.30

Finding the Fourth Proportional to 8,345.02, 12,512.64 and 3,151.30

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Solution

The fourth proportional to 8,345.02, 12,512.64 and 3,151.30 is: 4,725.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,345.02 : 12,512.64 = 3,151.30 : x
  2. Step 2: Convert to fraction form
    8,345.02/12,512.64 = 3,151.30/x
  3. Step 3: Cross multiply
    8,345.02x = 12,512.64 × 3,151.30
  4. Step 4: Simplify right side
    8,345.02x = 39,431,082.43
  5. Step 5: Solve for x
    x = 39,431,082.43/8,345.02
  6. Step 6: Final answer
    x = 4,725.10

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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.