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Finding the Fourth Proportional to 7,124.70, 9,829.08 and 4,767.60

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Solution

The fourth proportional to 7,124.70, 9,829.08 and 4,767.60 is: 6,577.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,124.70 : 9,829.08 = 4,767.60 : x
  2. Step 2: Convert to fraction form
    7,124.70/9,829.08 = 4,767.60/x
  3. Step 3: Cross multiply
    7,124.70x = 9,829.08 × 4,767.60
  4. Step 4: Simplify right side
    7,124.70x = 46,861,121.81
  5. Step 5: Solve for x
    x = 46,861,121.81/7,124.70
  6. Step 6: Final answer
    x = 6,577.28

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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.