Home / 4,812.28-6,641.97-3,130.76

Finding the Fourth Proportional to 4,812.28, 6,641.97 and 3,130.76

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Solution

The fourth proportional to 4,812.28, 6,641.97 and 3,130.76 is: 4,321.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,812.28 : 6,641.97 = 3,130.76 : x
  2. Step 2: Convert to fraction form
    4,812.28/6,641.97 = 3,130.76/x
  3. Step 3: Cross multiply
    4,812.28x = 6,641.97 × 3,130.76
  4. Step 4: Simplify right side
    4,812.28x = 20,794,414.00
  5. Step 5: Solve for x
    x = 20,794,414.00/4,812.28
  6. Step 6: Final answer
    x = 4,321.11

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Half scale
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Double scale
Find fourth proportional to 4,813.28, 6,643.35 and 3,131.76
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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.