Home / 3,929.85-5,422.95-2,358.81

Finding the Fourth Proportional to 3,929.85, 5,422.95 and 2,358.81

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Solution

The fourth proportional to 3,929.85, 5,422.95 and 2,358.81 is: 3,255.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,929.85 : 5,422.95 = 2,358.81 : x
  2. Step 2: Convert to fraction form
    3,929.85/5,422.95 = 2,358.81/x
  3. Step 3: Cross multiply
    3,929.85x = 5,422.95 × 2,358.81
  4. Step 4: Simplify right side
    3,929.85x = 12,791,708.69
  5. Step 5: Solve for x
    x = 12,791,708.69/3,929.85
  6. Step 6: Final answer
    x = 3,255.01

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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.