Home / 3,934.74-5,430.05-2,166.45

Finding the Fourth Proportional to 3,934.74, 5,430.05 and 2,166.45

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Solution

The fourth proportional to 3,934.74, 5,430.05 and 2,166.45 is: 2,989.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,934.74 : 5,430.05 = 2,166.45 : x
  2. Step 2: Convert to fraction form
    3,934.74/5,430.05 = 2,166.45/x
  3. Step 3: Cross multiply
    3,934.74x = 5,430.05 × 2,166.45
  4. Step 4: Simplify right side
    3,934.74x = 11,763,931.82
  5. Step 5: Solve for x
    x = 11,763,931.82/3,934.74
  6. Step 6: Final answer
    x = 2,989.76

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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.