Home / 3,140.15-4,710.90-949.10

Finding the Fourth Proportional to 3,140.15, 4,710.90 and 949.10

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Solution

The fourth proportional to 3,140.15, 4,710.90 and 949.10 is: 1,423.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,140.15 : 4,710.90 = 949.10 : x
  2. Step 2: Convert to fraction form
    3,140.15/4,710.90 = 949.10/x
  3. Step 3: Cross multiply
    3,140.15x = 4,710.90 × 949.10
  4. Step 4: Simplify right side
    3,140.15x = 4,471,115.19
  5. Step 5: Solve for x
    x = 4,471,115.19/3,140.15
  6. Step 6: Final answer
    x = 1,423.85

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Double scale
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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.