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Finding the Fourth Proportional to 8,390.04, 11,579.72 and 6,276.16

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Solution

The fourth proportional to 8,390.04, 11,579.72 and 6,276.16 is: 8,662.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,390.04 : 11,579.72 = 6,276.16 : x
  2. Step 2: Convert to fraction form
    8,390.04/11,579.72 = 6,276.16/x
  3. Step 3: Cross multiply
    8,390.04x = 11,579.72 × 6,276.16
  4. Step 4: Simplify right side
    8,390.04x = 72,676,175.48
  5. Step 5: Solve for x
    x = 72,676,175.48/8,390.04
  6. Step 6: Final answer
    x = 8,662.20

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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.