Home / 6,289.12-8,678.42-3,456.46

Finding the Fourth Proportional to 6,289.12, 8,678.42 and 3,456.46

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Solution

The fourth proportional to 6,289.12, 8,678.42 and 3,456.46 is: 4,769.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,289.12 : 8,678.42 = 3,456.46 : x
  2. Step 2: Convert to fraction form
    6,289.12/8,678.42 = 3,456.46/x
  3. Step 3: Cross multiply
    6,289.12x = 8,678.42 × 3,456.46
  4. Step 4: Simplify right side
    6,289.12x = 29,996,605.16
  5. Step 5: Solve for x
    x = 29,996,605.16/6,289.12
  6. Step 6: Final answer
    x = 4,769.60

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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.