Home / 5,210.75-7,190.20-4,151.21

Finding the Fourth Proportional to 5,210.75, 7,190.20 and 4,151.21

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Solution

The fourth proportional to 5,210.75, 7,190.20 and 4,151.21 is: 5,728.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,210.75 : 7,190.20 = 4,151.21 : x
  2. Step 2: Convert to fraction form
    5,210.75/7,190.20 = 4,151.21/x
  3. Step 3: Cross multiply
    5,210.75x = 7,190.20 × 4,151.21
  4. Step 4: Simplify right side
    5,210.75x = 29,848,037.74
  5. Step 5: Solve for x
    x = 29,848,037.74/5,210.75
  6. Step 6: Final answer
    x = 5,728.16

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Half scale
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Double scale
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.