Home / 1,720.58-2,582.15-625.86

Finding the Fourth Proportional to 1,720.58, 2,582.15 and 625.86

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Solution

The fourth proportional to 1,720.58, 2,582.15 and 625.86 is: 939.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,720.58 : 2,582.15 = 625.86 : x
  2. Step 2: Convert to fraction form
    1,720.58/2,582.15 = 625.86/x
  3. Step 3: Cross multiply
    1,720.58x = 2,582.15 × 625.86
  4. Step 4: Simplify right side
    1,720.58x = 1,616,061.27
  5. Step 5: Solve for x
    x = 1,616,061.27/1,720.58
  6. Step 6: Final answer
    x = 939.26

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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.