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Finding the Fourth Proportional to 6,345.24, 8,752.86 and 4,479

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Solution

The fourth proportional to 6,345.24, 8,752.86 and 4,479 is: 6,178.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,345.24 : 8,752.86 = 4,479 : x
  2. Step 2: Convert to fraction form
    6,345.24/8,752.86 = 4,479/x
  3. Step 3: Cross multiply
    6,345.24x = 8,752.86 × 4,479
  4. Step 4: Simplify right side
    6,345.24x = 39,204,059.94
  5. Step 5: Solve for x
    x = 39,204,059.94/6,345.24
  6. Step 6: Final answer
    x = 6,178.50

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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.