Home / 3,540.47-4,886.73-2,421.86

Finding the Fourth Proportional to 3,540.47, 4,886.73 and 2,421.86

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Solution

The fourth proportional to 3,540.47, 4,886.73 and 2,421.86 is: 3,342.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,540.47 : 4,886.73 = 2,421.86 : x
  2. Step 2: Convert to fraction form
    3,540.47/4,886.73 = 2,421.86/x
  3. Step 3: Cross multiply
    3,540.47x = 4,886.73 × 2,421.86
  4. Step 4: Simplify right side
    3,540.47x = 11,834,951.48
  5. Step 5: Solve for x
    x = 11,834,951.48/3,540.47
  6. Step 6: Final answer
    x = 3,342.77

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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.