Home / 3,922.96-5,411.64-2,430.40

Finding the Fourth Proportional to 3,922.96, 5,411.64 and 2,430.40

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Solution

The fourth proportional to 3,922.96, 5,411.64 and 2,430.40 is: 3,352.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,922.96 : 5,411.64 = 2,430.40 : x
  2. Step 2: Convert to fraction form
    3,922.96/5,411.64 = 2,430.40/x
  3. Step 3: Cross multiply
    3,922.96x = 5,411.64 × 2,430.40
  4. Step 4: Simplify right side
    3,922.96x = 13,152,449.86
  5. Step 5: Solve for x
    x = 13,152,449.86/3,922.96
  6. Step 6: Final answer
    x = 3,352.69

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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.