Home / 8,440.63-12,612.94-6,318.55

Finding the Fourth Proportional to 8,440.63, 12,612.94 and 6,318.55

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Solution

The fourth proportional to 8,440.63, 12,612.94 and 6,318.55 is: 9,441.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,440.63 : 12,612.94 = 6,318.55 : x
  2. Step 2: Convert to fraction form
    8,440.63/12,612.94 = 6,318.55/x
  3. Step 3: Cross multiply
    8,440.63x = 12,612.94 × 6,318.55
  4. Step 4: Simplify right side
    8,440.63x = 79,695,492.04
  5. Step 5: Solve for x
    x = 79,695,492.04/8,440.63
  6. Step 6: Final answer
    x = 9,441.89

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.