Home / 3,140.40-4,697.10-2,813.70

Finding the Fourth Proportional to 3,140.40, 4,697.10 and 2,813.70

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Solution

The fourth proportional to 3,140.40, 4,697.10 and 2,813.70 is: 4,208.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,140.40 : 4,697.10 = 2,813.70 : x
  2. Step 2: Convert to fraction form
    3,140.40/4,697.10 = 2,813.70/x
  3. Step 3: Cross multiply
    3,140.40x = 4,697.10 × 2,813.70
  4. Step 4: Simplify right side
    3,140.40x = 13,216,230.27
  5. Step 5: Solve for x
    x = 13,216,230.27/3,140.40
  6. Step 6: Final answer
    x = 4,208.45

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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.