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Finding the Fourth Proportional to 4,070, 5,616.60 and 2,207

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Solution

The fourth proportional to 4,070, 5,616.60 and 2,207 is: 3,045.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,070 : 5,616.60 = 2,207 : x
  2. Step 2: Convert to fraction form
    4,070/5,616.60 = 2,207/x
  3. Step 3: Cross multiply
    4,070x = 5,616.60 × 2,207
  4. Step 4: Simplify right side
    4,070x = 12,395,836.20
  5. Step 5: Solve for x
    x = 12,395,836.20/4,070
  6. Step 6: Final answer
    x = 3,045.66

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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.