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Finding the Fourth Proportional to 5,780.34, 8,671.10 and 1,620.36

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Solution

The fourth proportional to 5,780.34, 8,671.10 and 1,620.36 is: 2,430.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,780.34 : 8,671.10 = 1,620.36 : x
  2. Step 2: Convert to fraction form
    5,780.34/8,671.10 = 1,620.36/x
  3. Step 3: Cross multiply
    5,780.34x = 8,671.10 × 1,620.36
  4. Step 4: Simplify right side
    5,780.34x = 14,050,295.49
  5. Step 5: Solve for x
    x = 14,050,295.49/5,780.34
  6. Step 6: Final answer
    x = 2,430.70

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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.