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Finding the Fourth Proportional to 8,425.84, 12,631.38 and 3,492.40

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Solution

The fourth proportional to 8,425.84, 12,631.38 and 3,492.40 is: 5,235.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,425.84 : 12,631.38 = 3,492.40 : x
  2. Step 2: Convert to fraction form
    8,425.84/12,631.38 = 3,492.40/x
  3. Step 3: Cross multiply
    8,425.84x = 12,631.38 × 3,492.40
  4. Step 4: Simplify right side
    8,425.84x = 44,113,831.51
  5. Step 5: Solve for x
    x = 44,113,831.51/8,425.84
  6. Step 6: Final answer
    x = 5,235.54

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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.