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Finding the Fourth Proportional to 4,988, 7,479.68 and 2,025.68

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Solution

The fourth proportional to 4,988, 7,479.68 and 2,025.68 is: 3,037.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,988 : 7,479.68 = 2,025.68 : x
  2. Step 2: Convert to fraction form
    4,988/7,479.68 = 2,025.68/x
  3. Step 3: Cross multiply
    4,988x = 7,479.68 × 2,025.68
  4. Step 4: Simplify right side
    4,988x = 15,151,438.18
  5. Step 5: Solve for x
    x = 15,151,438.18/4,988
  6. Step 6: Final answer
    x = 3,037.58

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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.