Home / 5,390.89-7,439.46-3,153.87

Finding the Fourth Proportional to 5,390.89, 7,439.46 and 3,153.87

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Solution

The fourth proportional to 5,390.89, 7,439.46 and 3,153.87 is: 4,352.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,390.89 : 7,439.46 = 3,153.87 : x
  2. Step 2: Convert to fraction form
    5,390.89/7,439.46 = 3,153.87/x
  3. Step 3: Cross multiply
    5,390.89x = 7,439.46 × 3,153.87
  4. Step 4: Simplify right side
    5,390.89x = 23,463,089.71
  5. Step 5: Solve for x
    x = 23,463,089.71/5,390.89
  6. Step 6: Final answer
    x = 4,352.36

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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.