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Finding the Fourth Proportional to 3,490.74, 5,236.08 and 893.64

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Solution

The fourth proportional to 3,490.74, 5,236.08 and 893.64 is: 1,340.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,490.74 : 5,236.08 = 893.64 : x
  2. Step 2: Convert to fraction form
    3,490.74/5,236.08 = 893.64/x
  3. Step 3: Cross multiply
    3,490.74x = 5,236.08 × 893.64
  4. Step 4: Simplify right side
    3,490.74x = 4,679,170.53
  5. Step 5: Solve for x
    x = 4,679,170.53/3,490.74
  6. Step 6: Final answer
    x = 1,340.45

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.