Home / 5,781.50-8,670.80-1,620.43

Finding the Fourth Proportional to 5,781.50, 8,670.80 and 1,620.43

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Solution

The fourth proportional to 5,781.50, 8,670.80 and 1,620.43 is: 2,430.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,781.50 : 8,670.80 = 1,620.43 : x
  2. Step 2: Convert to fraction form
    5,781.50/8,670.80 = 1,620.43/x
  3. Step 3: Cross multiply
    5,781.50x = 8,670.80 × 1,620.43
  4. Step 4: Simplify right side
    5,781.50x = 14,050,424.44
  5. Step 5: Solve for x
    x = 14,050,424.44/5,781.50
  6. Step 6: Final answer
    x = 2,430.24

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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.