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Finding the Fourth Proportional to 1,860.72, 2,565.36 and 1,719.96

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Solution

The fourth proportional to 1,860.72, 2,565.36 and 1,719.96 is: 2,371.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,860.72 : 2,565.36 = 1,719.96 : x
  2. Step 2: Convert to fraction form
    1,860.72/2,565.36 = 1,719.96/x
  3. Step 3: Cross multiply
    1,860.72x = 2,565.36 × 1,719.96
  4. Step 4: Simplify right side
    1,860.72x = 4,412,316.59
  5. Step 5: Solve for x
    x = 4,412,316.59/1,860.72
  6. Step 6: Final answer
    x = 2,371.30

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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.