Home / 1,720.69-2,374.03-1,057.30

Finding the Fourth Proportional to 1,720.69, 2,374.03 and 1,057.30

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Solution

The fourth proportional to 1,720.69, 2,374.03 and 1,057.30 is: 1,458.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,720.69 : 2,374.03 = 1,057.30 : x
  2. Step 2: Convert to fraction form
    1,720.69/2,374.03 = 1,057.30/x
  3. Step 3: Cross multiply
    1,720.69x = 2,374.03 × 1,057.30
  4. Step 4: Simplify right side
    1,720.69x = 2,510,073.63
  5. Step 5: Solve for x
    x = 2,510,073.63/1,720.69
  6. Step 6: Final answer
    x = 1,458.76

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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.