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Finding the Fourth Proportional to 5,145.64, 7,712.26 and 2,368.51

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Solution

The fourth proportional to 5,145.64, 7,712.26 and 2,368.51 is: 3,549.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,145.64 : 7,712.26 = 2,368.51 : x
  2. Step 2: Convert to fraction form
    5,145.64/7,712.26 = 2,368.51/x
  3. Step 3: Cross multiply
    5,145.64x = 7,712.26 × 2,368.51
  4. Step 4: Simplify right side
    5,145.64x = 18,266,514.53
  5. Step 5: Solve for x
    x = 18,266,514.53/5,145.64
  6. Step 6: Final answer
    x = 3,549.90

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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.