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Finding the Fourth Proportional to 8,487.58, 11,715.58 and 4,951.48

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Solution

The fourth proportional to 8,487.58, 11,715.58 and 4,951.48 is: 6,834.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,487.58 : 11,715.58 = 4,951.48 : x
  2. Step 2: Convert to fraction form
    8,487.58/11,715.58 = 4,951.48/x
  3. Step 3: Cross multiply
    8,487.58x = 11,715.58 × 4,951.48
  4. Step 4: Simplify right side
    8,487.58x = 58,009,460.06
  5. Step 5: Solve for x
    x = 58,009,460.06/8,487.58
  6. Step 6: Final answer
    x = 6,834.63

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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.