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Finding the Fourth Proportional to 2,343.51, 3,515.29 and 612.14

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Solution

The fourth proportional to 2,343.51, 3,515.29 and 612.14 is: 918.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,343.51 : 3,515.29 = 612.14 : x
  2. Step 2: Convert to fraction form
    2,343.51/3,515.29 = 612.14/x
  3. Step 3: Cross multiply
    2,343.51x = 3,515.29 × 612.14
  4. Step 4: Simplify right side
    2,343.51x = 2,151,830.51
  5. Step 5: Solve for x
    x = 2,151,830.51/2,343.51
  6. Step 6: Final answer
    x = 918.21

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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.