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Finding the Fourth Proportional to 3,374.47, 4,656.54 and 2,115.47

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Solution

The fourth proportional to 3,374.47, 4,656.54 and 2,115.47 is: 2,919.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,374.47 : 4,656.54 = 2,115.47 : x
  2. Step 2: Convert to fraction form
    3,374.47/4,656.54 = 2,115.47/x
  3. Step 3: Cross multiply
    3,374.47x = 4,656.54 × 2,115.47
  4. Step 4: Simplify right side
    3,374.47x = 9,850,782.32
  5. Step 5: Solve for x
    x = 9,850,782.32/3,374.47
  6. Step 6: Final answer
    x = 2,919.21

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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.