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Finding the Fourth Proportional to 3,859, 5,325.45 and 2,090.62

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Solution

The fourth proportional to 3,859, 5,325.45 and 2,090.62 is: 2,885.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,859 : 5,325.45 = 2,090.62 : x
  2. Step 2: Convert to fraction form
    3,859/5,325.45 = 2,090.62/x
  3. Step 3: Cross multiply
    3,859x = 5,325.45 × 2,090.62
  4. Step 4: Simplify right side
    3,859x = 11,133,492.28
  5. Step 5: Solve for x
    x = 11,133,492.28/3,859
  6. Step 6: Final answer
    x = 2,885.07

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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.