Home / 5,100.60-7,038.95-2,862.64

Finding the Fourth Proportional to 5,100.60, 7,038.95 and 2,862.64

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Solution

The fourth proportional to 5,100.60, 7,038.95 and 2,862.64 is: 3,950.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,100.60 : 7,038.95 = 2,862.64 : x
  2. Step 2: Convert to fraction form
    5,100.60/7,038.95 = 2,862.64/x
  3. Step 3: Cross multiply
    5,100.60x = 7,038.95 × 2,862.64
  4. Step 4: Simplify right side
    5,100.60x = 20,149,979.83
  5. Step 5: Solve for x
    x = 20,149,979.83/5,100.60
  6. Step 6: Final answer
    x = 3,950.51

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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.