Home / 7,389.20-11,077.55-3,438.42

Finding the Fourth Proportional to 7,389.20, 11,077.55 and 3,438.42

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Solution

The fourth proportional to 7,389.20, 11,077.55 and 3,438.42 is: 5,154.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,389.20 : 11,077.55 = 3,438.42 : x
  2. Step 2: Convert to fraction form
    7,389.20/11,077.55 = 3,438.42/x
  3. Step 3: Cross multiply
    7,389.20x = 11,077.55 × 3,438.42
  4. Step 4: Simplify right side
    7,389.20x = 38,089,242.97
  5. Step 5: Solve for x
    x = 38,089,242.97/7,389.20
  6. Step 6: Final answer
    x = 5,154.72

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.