Home / 3,140.10-4,710.20-948.87

Finding the Fourth Proportional to 3,140.10, 4,710.20 and 948.87

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Solution

The fourth proportional to 3,140.10, 4,710.20 and 948.87 is: 1,423.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,140.10 : 4,710.20 = 948.87 : x
  2. Step 2: Convert to fraction form
    3,140.10/4,710.20 = 948.87/x
  3. Step 3: Cross multiply
    3,140.10x = 4,710.20 × 948.87
  4. Step 4: Simplify right side
    3,140.10x = 4,469,362.73
  5. Step 5: Solve for x
    x = 4,469,362.73/3,140.10
  6. Step 6: Final answer
    x = 1,423.32

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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.