Home / 5,389.79-7,439.99-3,626.42

Finding the Fourth Proportional to 5,389.79, 7,439.99 and 3,626.42

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Solution

The fourth proportional to 5,389.79, 7,439.99 and 3,626.42 is: 5,005.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,389.79 : 7,439.99 = 3,626.42 : x
  2. Step 2: Convert to fraction form
    5,389.79/7,439.99 = 3,626.42/x
  3. Step 3: Cross multiply
    5,389.79x = 7,439.99 × 3,626.42
  4. Step 4: Simplify right side
    5,389.79x = 26,980,473.20
  5. Step 5: Solve for x
    x = 26,980,473.20/5,389.79
  6. Step 6: Final answer
    x = 5,005.85

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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.