Home / 5,317.74-7,976.61-1,620

Finding the Fourth Proportional to 5,317.74, 7,976.61 and 1,620

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Solution

The fourth proportional to 5,317.74, 7,976.61 and 1,620 is: 2,430

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,317.74 : 7,976.61 = 1,620 : x
  2. Step 2: Convert to fraction form
    5,317.74/7,976.61 = 1,620/x
  3. Step 3: Cross multiply
    5,317.74x = 7,976.61 × 1,620
  4. Step 4: Simplify right side
    5,317.74x = 12,922,108.20
  5. Step 5: Solve for x
    x = 12,922,108.20/5,317.74
  6. Step 6: Final answer
    x = 2,430

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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.