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Finding the Fourth Proportional to 3,987.16, 5,502 and 2,495

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Solution

The fourth proportional to 3,987.16, 5,502 and 2,495 is: 3,442.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,987.16 : 5,502 = 2,495 : x
  2. Step 2: Convert to fraction form
    3,987.16/5,502 = 2,495/x
  3. Step 3: Cross multiply
    3,987.16x = 5,502 × 2,495
  4. Step 4: Simplify right side
    3,987.16x = 13,727,490
  5. Step 5: Solve for x
    x = 13,727,490/3,987.16
  6. Step 6: Final answer
    x = 3,442.92

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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.