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Finding the Fourth Proportional to 6,340.80, 8,750.88 and 4,103.76

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Solution

The fourth proportional to 6,340.80, 8,750.88 and 4,103.76 is: 5,663.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,340.80 : 8,750.88 = 4,103.76 : x
  2. Step 2: Convert to fraction form
    6,340.80/8,750.88 = 4,103.76/x
  3. Step 3: Cross multiply
    6,340.80x = 8,750.88 × 4,103.76
  4. Step 4: Simplify right side
    6,340.80x = 35,911,511.31
  5. Step 5: Solve for x
    x = 35,911,511.31/6,340.80
  6. Step 6: Final answer
    x = 5,663.56

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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.