Home / 5,781.31-8,670.39-1,621.06

Finding the Fourth Proportional to 5,781.31, 8,670.39 and 1,621.06

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Solution

The fourth proportional to 5,781.31, 8,670.39 and 1,621.06 is: 2,431.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,781.31 : 8,670.39 = 1,621.06 : x
  2. Step 2: Convert to fraction form
    5,781.31/8,670.39 = 1,621.06/x
  3. Step 3: Cross multiply
    5,781.31x = 8,670.39 × 1,621.06
  4. Step 4: Simplify right side
    5,781.31x = 14,055,222.41
  5. Step 5: Solve for x
    x = 14,055,222.41/5,781.31
  6. Step 6: Final answer
    x = 2,431.15

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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.