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Finding the Fourth Proportional to 6,486.45, 8,947.70 and 4,251.93

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Solution

The fourth proportional to 6,486.45, 8,947.70 and 4,251.93 is: 5,865.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,486.45 : 8,947.70 = 4,251.93 : x
  2. Step 2: Convert to fraction form
    6,486.45/8,947.70 = 4,251.93/x
  3. Step 3: Cross multiply
    6,486.45x = 8,947.70 × 4,251.93
  4. Step 4: Simplify right side
    6,486.45x = 38,044,994.06
  5. Step 5: Solve for x
    x = 38,044,994.06/6,486.45
  6. Step 6: Final answer
    x = 5,865.30

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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.