Home / 5,780.12-8,670.17-1,620.74

Finding the Fourth Proportional to 5,780.12, 8,670.17 and 1,620.74

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Solution

The fourth proportional to 5,780.12, 8,670.17 and 1,620.74 is: 2,431.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,780.12 : 8,670.17 = 1,620.74 : x
  2. Step 2: Convert to fraction form
    5,780.12/8,670.17 = 1,620.74/x
  3. Step 3: Cross multiply
    5,780.12x = 8,670.17 × 1,620.74
  4. Step 4: Simplify right side
    5,780.12x = 14,052,117.05
  5. Step 5: Solve for x
    x = 14,052,117.05/5,780.12
  6. Step 6: Final answer
    x = 2,431.11

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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.