Home / 3,913.15-5,400.07-2,420.67

Finding the Fourth Proportional to 3,913.15, 5,400.07 and 2,420.67

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Solution

The fourth proportional to 3,913.15, 5,400.07 and 2,420.67 is: 3,340.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,913.15 : 5,400.07 = 2,420.67 : x
  2. Step 2: Convert to fraction form
    3,913.15/5,400.07 = 2,420.67/x
  3. Step 3: Cross multiply
    3,913.15x = 5,400.07 × 2,420.67
  4. Step 4: Simplify right side
    3,913.15x = 13,071,787.45
  5. Step 5: Solve for x
    x = 13,071,787.45/3,913.15
  6. Step 6: Final answer
    x = 3,340.48

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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.