Home / 5,028-6,938.64-2,931.72

Finding the Fourth Proportional to 5,028, 6,938.64 and 2,931.72

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Solution

The fourth proportional to 5,028, 6,938.64 and 2,931.72 is: 4,045.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,028 : 6,938.64 = 2,931.72 : x
  2. Step 2: Convert to fraction form
    5,028/6,938.64 = 2,931.72/x
  3. Step 3: Cross multiply
    5,028x = 6,938.64 × 2,931.72
  4. Step 4: Simplify right side
    5,028x = 20,342,149.66
  5. Step 5: Solve for x
    x = 20,342,149.66/5,028
  6. Step 6: Final answer
    x = 4,045.77

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.