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Finding the Fourth Proportional to 8,492.95, 12,739.41 and 5,570.57

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Solution

The fourth proportional to 8,492.95, 12,739.41 and 5,570.57 is: 8,355.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,492.95 : 12,739.41 = 5,570.57 : x
  2. Step 2: Convert to fraction form
    8,492.95/12,739.41 = 5,570.57/x
  3. Step 3: Cross multiply
    8,492.95x = 12,739.41 × 5,570.57
  4. Step 4: Simplify right side
    8,492.95x = 70,965,775.16
  5. Step 5: Solve for x
    x = 70,965,775.16/8,492.95
  6. Step 6: Final answer
    x = 8,355.85

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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.