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Finding the Fourth Proportional to 8,492.54, 12,739.40 and 3,557.22

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Solution

The fourth proportional to 8,492.54, 12,739.40 and 3,557.22 is: 5,336.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,492.54 : 12,739.40 = 3,557.22 : x
  2. Step 2: Convert to fraction form
    8,492.54/12,739.40 = 3,557.22/x
  3. Step 3: Cross multiply
    8,492.54x = 12,739.40 × 3,557.22
  4. Step 4: Simplify right side
    8,492.54x = 45,316,848.47
  5. Step 5: Solve for x
    x = 45,316,848.47/8,492.54
  6. Step 6: Final answer
    x = 5,336.08

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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.