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Finding the Fourth Proportional to 3,068.18, 4,600.86 and 987.77

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Solution

The fourth proportional to 3,068.18, 4,600.86 and 987.77 is: 1,481.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,068.18 : 4,600.86 = 987.77 : x
  2. Step 2: Convert to fraction form
    3,068.18/4,600.86 = 987.77/x
  3. Step 3: Cross multiply
    3,068.18x = 4,600.86 × 987.77
  4. Step 4: Simplify right side
    3,068.18x = 4,544,591.48
  5. Step 5: Solve for x
    x = 4,544,591.48/3,068.18
  6. Step 6: Final answer
    x = 1,481.20

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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.