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Finding the Fourth Proportional to 3,310.64, 4,985.77 and 3,015.40

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Solution

The fourth proportional to 3,310.64, 4,985.77 and 3,015.40 is: 4,541.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,310.64 : 4,985.77 = 3,015.40 : x
  2. Step 2: Convert to fraction form
    3,310.64/4,985.77 = 3,015.40/x
  3. Step 3: Cross multiply
    3,310.64x = 4,985.77 × 3,015.40
  4. Step 4: Simplify right side
    3,310.64x = 15,034,090.86
  5. Step 5: Solve for x
    x = 15,034,090.86/3,310.64
  6. Step 6: Final answer
    x = 4,541.14

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.