Home / 5,319.57-7,977.33-1,620.66

Finding the Fourth Proportional to 5,319.57, 7,977.33 and 1,620.66

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Solution

The fourth proportional to 5,319.57, 7,977.33 and 1,620.66 is: 2,430.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,319.57 : 7,977.33 = 1,620.66 : x
  2. Step 2: Convert to fraction form
    5,319.57/7,977.33 = 1,620.66/x
  3. Step 3: Cross multiply
    5,319.57x = 7,977.33 × 1,620.66
  4. Step 4: Simplify right side
    5,319.57x = 12,928,539.64
  5. Step 5: Solve for x
    x = 12,928,539.64/5,319.57
  6. Step 6: Final answer
    x = 2,430.37

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1.5x scale

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.