Home / 3,134.40-4,688.10-2,807.70

Finding the Fourth Proportional to 3,134.40, 4,688.10 and 2,807.70

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Solution

The fourth proportional to 3,134.40, 4,688.10 and 2,807.70 is: 4,199.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,134.40 : 4,688.10 = 2,807.70 : x
  2. Step 2: Convert to fraction form
    3,134.40/4,688.10 = 2,807.70/x
  3. Step 3: Cross multiply
    3,134.40x = 4,688.10 × 2,807.70
  4. Step 4: Simplify right side
    3,134.40x = 13,162,778.37
  5. Step 5: Solve for x
    x = 13,162,778.37/3,134.40
  6. Step 6: Final answer
    x = 4,199.46

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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.