Home / 5,617.50-8,428.70-2,157.18

Finding the Fourth Proportional to 5,617.50, 8,428.70 and 2,157.18

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Solution

The fourth proportional to 5,617.50, 8,428.70 and 2,157.18 is: 3,236.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,617.50 : 8,428.70 = 2,157.18 : x
  2. Step 2: Convert to fraction form
    5,617.50/8,428.70 = 2,157.18/x
  3. Step 3: Cross multiply
    5,617.50x = 8,428.70 × 2,157.18
  4. Step 4: Simplify right side
    5,617.50x = 18,182,170.14
  5. Step 5: Solve for x
    x = 18,182,170.14/5,617.50
  6. Step 6: Final answer
    x = 3,236.70

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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.