Home / 3,925.86-5,417.77-2,157.58

Finding the Fourth Proportional to 3,925.86, 5,417.77 and 2,157.58

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Solution

The fourth proportional to 3,925.86, 5,417.77 and 2,157.58 is: 2,977.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,925.86 : 5,417.77 = 2,157.58 : x
  2. Step 2: Convert to fraction form
    3,925.86/5,417.77 = 2,157.58/x
  3. Step 3: Cross multiply
    3,925.86x = 5,417.77 × 2,157.58
  4. Step 4: Simplify right side
    3,925.86x = 11,689,272.20
  5. Step 5: Solve for x
    x = 11,689,272.20/3,925.86
  6. Step 6: Final answer
    x = 2,977.51

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1.5x scale

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.