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Finding the Fourth Proportional to 8,984.04, 12,385.89 and 6,291.64

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Solution

The fourth proportional to 8,984.04, 12,385.89 and 6,291.64 is: 8,674.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,984.04 : 12,385.89 = 6,291.64 : x
  2. Step 2: Convert to fraction form
    8,984.04/12,385.89 = 6,291.64/x
  3. Step 3: Cross multiply
    8,984.04x = 12,385.89 × 6,291.64
  4. Step 4: Simplify right side
    8,984.04x = 77,927,576.44
  5. Step 5: Solve for x
    x = 77,927,576.44/8,984.04
  6. Step 6: Final answer
    x = 8,674.01

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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.