Home / 9,340.85-12,890.68-5,362.74

Finding the Fourth Proportional to 9,340.85, 12,890.68 and 5,362.74

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Solution

The fourth proportional to 9,340.85, 12,890.68 and 5,362.74 is: 7,400.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,340.85 : 12,890.68 = 5,362.74 : x
  2. Step 2: Convert to fraction form
    9,340.85/12,890.68 = 5,362.74/x
  3. Step 3: Cross multiply
    9,340.85x = 12,890.68 × 5,362.74
  4. Step 4: Simplify right side
    9,340.85x = 69,129,351.86
  5. Step 5: Solve for x
    x = 69,129,351.86/9,340.85
  6. Step 6: Final answer
    x = 7,400.75

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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.