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Finding the Fourth Proportional to 3,565.59, 5,343.72 and 1,918.59

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Solution

The fourth proportional to 3,565.59, 5,343.72 and 1,918.59 is: 2,875.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,565.59 : 5,343.72 = 1,918.59 : x
  2. Step 2: Convert to fraction form
    3,565.59/5,343.72 = 1,918.59/x
  3. Step 3: Cross multiply
    3,565.59x = 5,343.72 × 1,918.59
  4. Step 4: Simplify right side
    3,565.59x = 10,252,407.75
  5. Step 5: Solve for x
    x = 10,252,407.75/3,565.59
  6. Step 6: Final answer
    x = 2,875.37

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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.