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Finding the Fourth Proportional to 6,397.16, 8,829.20 and 4,790.12

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Solution

The fourth proportional to 6,397.16, 8,829.20 and 4,790.12 is: 6,611.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,397.16 : 8,829.20 = 4,790.12 : x
  2. Step 2: Convert to fraction form
    6,397.16/8,829.20 = 4,790.12/x
  3. Step 3: Cross multiply
    6,397.16x = 8,829.20 × 4,790.12
  4. Step 4: Simplify right side
    6,397.16x = 42,292,895.33
  5. Step 5: Solve for x
    x = 42,292,895.33/6,397.16
  6. Step 6: Final answer
    x = 6,611.20

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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.