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Finding the Fourth Proportional to 5,342.63, 7,372.82 and 2,985.32

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Solution

The fourth proportional to 5,342.63, 7,372.82 and 2,985.32 is: 4,119.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,342.63 : 7,372.82 = 2,985.32 : x
  2. Step 2: Convert to fraction form
    5,342.63/7,372.82 = 2,985.32/x
  3. Step 3: Cross multiply
    5,342.63x = 7,372.82 × 2,985.32
  4. Step 4: Simplify right side
    5,342.63x = 22,010,252.90
  5. Step 5: Solve for x
    x = 22,010,252.90/5,342.63
  6. Step 6: Final answer
    x = 4,119.75

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1.5x scale

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.