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Finding the Fourth Proportional to 3,068.35, 4,603.26 and 988.55

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Solution

The fourth proportional to 3,068.35, 4,603.26 and 988.55 is: 1,483.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,068.35 : 4,603.26 = 988.55 : x
  2. Step 2: Convert to fraction form
    3,068.35/4,603.26 = 988.55/x
  3. Step 3: Cross multiply
    3,068.35x = 4,603.26 × 988.55
  4. Step 4: Simplify right side
    3,068.35x = 4,550,567.89
  5. Step 5: Solve for x
    x = 4,550,567.89/3,068.35
  6. Step 6: Final answer
    x = 1,483.07

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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.