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Finding the Fourth Proportional to 8,433.60, 12,643.80 and 5,146.08

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Solution

The fourth proportional to 8,433.60, 12,643.80 and 5,146.08 is: 7,715.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,433.60 : 12,643.80 = 5,146.08 : x
  2. Step 2: Convert to fraction form
    8,433.60/12,643.80 = 5,146.08/x
  3. Step 3: Cross multiply
    8,433.60x = 12,643.80 × 5,146.08
  4. Step 4: Simplify right side
    8,433.60x = 65,066,006.30
  5. Step 5: Solve for x
    x = 65,066,006.30/8,433.60
  6. Step 6: Final answer
    x = 7,715.09

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.