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Finding the Fourth Proportional to 6,342.15, 8,751.40 and 3,509.33

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Solution

The fourth proportional to 6,342.15, 8,751.40 and 3,509.33 is: 4,842.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,342.15 : 8,751.40 = 3,509.33 : x
  2. Step 2: Convert to fraction form
    6,342.15/8,751.40 = 3,509.33/x
  3. Step 3: Cross multiply
    6,342.15x = 8,751.40 × 3,509.33
  4. Step 4: Simplify right side
    6,342.15x = 30,711,563.67
  5. Step 5: Solve for x
    x = 30,711,563.67/6,342.15
  6. Step 6: Final answer
    x = 4,842.45

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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.