Home / 2,862.60-3,941.64-2,155.47

Finding the Fourth Proportional to 2,862.60, 3,941.64 and 2,155.47

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Solution

The fourth proportional to 2,862.60, 3,941.64 and 2,155.47 is: 2,967.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,862.60 : 3,941.64 = 2,155.47 : x
  2. Step 2: Convert to fraction form
    2,862.60/3,941.64 = 2,155.47/x
  3. Step 3: Cross multiply
    2,862.60x = 3,941.64 × 2,155.47
  4. Step 4: Simplify right side
    2,862.60x = 8,496,086.77
  5. Step 5: Solve for x
    x = 8,496,086.77/2,862.60
  6. Step 6: Final answer
    x = 2,967.96

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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.