Home / 3,318.70-4,973.55-2,145.10

Finding the Fourth Proportional to 3,318.70, 4,973.55 and 2,145.10

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Solution

The fourth proportional to 3,318.70, 4,973.55 and 2,145.10 is: 3,214.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,318.70 : 4,973.55 = 2,145.10 : x
  2. Step 2: Convert to fraction form
    3,318.70/4,973.55 = 2,145.10/x
  3. Step 3: Cross multiply
    3,318.70x = 4,973.55 × 2,145.10
  4. Step 4: Simplify right side
    3,318.70x = 10,668,762.11
  5. Step 5: Solve for x
    x = 10,668,762.11/3,318.70
  6. Step 6: Final answer
    x = 3,214.74

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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.