Home / 5,347.85-7,378.38-3,109.32

Finding the Fourth Proportional to 5,347.85, 7,378.38 and 3,109.32

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Solution

The fourth proportional to 5,347.85, 7,378.38 and 3,109.32 is: 4,289.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,347.85 : 7,378.38 = 3,109.32 : x
  2. Step 2: Convert to fraction form
    5,347.85/7,378.38 = 3,109.32/x
  3. Step 3: Cross multiply
    5,347.85x = 7,378.38 × 3,109.32
  4. Step 4: Simplify right side
    5,347.85x = 22,941,744.50
  5. Step 5: Solve for x
    x = 22,941,744.50/5,347.85
  6. Step 6: Final answer
    x = 4,289.90

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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.