Home / 3,742.05-5,615-2,870.16

Finding the Fourth Proportional to 3,742.05, 5,615 and 2,870.16

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Solution

The fourth proportional to 3,742.05, 5,615 and 2,870.16 is: 4,306.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,742.05 : 5,615 = 2,870.16 : x
  2. Step 2: Convert to fraction form
    3,742.05/5,615 = 2,870.16/x
  3. Step 3: Cross multiply
    3,742.05x = 5,615 × 2,870.16
  4. Step 4: Simplify right side
    3,742.05x = 16,115,948.40
  5. Step 5: Solve for x
    x = 16,115,948.40/3,742.05
  6. Step 6: Final answer
    x = 4,306.72

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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.