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Finding the Fourth Proportional to 8,784.81, 12,130.43 and 6,274.62

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Solution

The fourth proportional to 8,784.81, 12,130.43 and 6,274.62 is: 8,664.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,784.81 : 12,130.43 = 6,274.62 : x
  2. Step 2: Convert to fraction form
    8,784.81/12,130.43 = 6,274.62/x
  3. Step 3: Cross multiply
    8,784.81x = 12,130.43 × 6,274.62
  4. Step 4: Simplify right side
    8,784.81x = 76,113,807.31
  5. Step 5: Solve for x
    x = 76,113,807.31/8,784.81
  6. Step 6: Final answer
    x = 8,664.25

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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.