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Finding the Fourth Proportional to 8,984.79, 12,372.23 and 8,785.64

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Solution

The fourth proportional to 8,984.79, 12,372.23 and 8,785.64 is: 12,097.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,984.79 : 12,372.23 = 8,785.64 : x
  2. Step 2: Convert to fraction form
    8,984.79/12,372.23 = 8,785.64/x
  3. Step 3: Cross multiply
    8,984.79x = 12,372.23 × 8,785.64
  4. Step 4: Simplify right side
    8,984.79x = 108,697,852.99
  5. Step 5: Solve for x
    x = 108,697,852.99/8,984.79
  6. Step 6: Final answer
    x = 12,097.98

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.