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Finding the Fourth Proportional to 3,140.60, 4,710.90 and 950.86

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Solution

The fourth proportional to 3,140.60, 4,710.90 and 950.86 is: 1,426.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,140.60 : 4,710.90 = 950.86 : x
  2. Step 2: Convert to fraction form
    3,140.60/4,710.90 = 950.86/x
  3. Step 3: Cross multiply
    3,140.60x = 4,710.90 × 950.86
  4. Step 4: Simplify right side
    3,140.60x = 4,479,406.37
  5. Step 5: Solve for x
    x = 4,479,406.37/3,140.60
  6. Step 6: Final answer
    x = 1,426.29

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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.