Home / 5,780.57-8,670.49-1,620.49

Finding the Fourth Proportional to 5,780.57, 8,670.49 and 1,620.49

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Solution

The fourth proportional to 5,780.57, 8,670.49 and 1,620.49 is: 2,430.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,780.57 : 8,670.49 = 1,620.49 : x
  2. Step 2: Convert to fraction form
    5,780.57/8,670.49 = 1,620.49/x
  3. Step 3: Cross multiply
    5,780.57x = 8,670.49 × 1,620.49
  4. Step 4: Simplify right side
    5,780.57x = 14,050,442.34
  5. Step 5: Solve for x
    x = 14,050,442.34/5,780.57
  6. Step 6: Final answer
    x = 2,430.63

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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.