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Finding the Fourth Proportional to 4,886.66, 7,329.89 and 1,188.91

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Solution

The fourth proportional to 4,886.66, 7,329.89 and 1,188.91 is: 1,783.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,886.66 : 7,329.89 = 1,188.91 : x
  2. Step 2: Convert to fraction form
    4,886.66/7,329.89 = 1,188.91/x
  3. Step 3: Cross multiply
    4,886.66x = 7,329.89 × 1,188.91
  4. Step 4: Simplify right side
    4,886.66x = 8,714,579.52
  5. Step 5: Solve for x
    x = 8,714,579.52/4,886.66
  6. Step 6: Final answer
    x = 1,783.34

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.