Home / 9,340.99-12,890.14-5,359.30

Finding the Fourth Proportional to 9,340.99, 12,890.14 and 5,359.30

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Solution

The fourth proportional to 9,340.99, 12,890.14 and 5,359.30 is: 7,395.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,340.99 : 12,890.14 = 5,359.30 : x
  2. Step 2: Convert to fraction form
    9,340.99/12,890.14 = 5,359.30/x
  3. Step 3: Cross multiply
    9,340.99x = 12,890.14 × 5,359.30
  4. Step 4: Simplify right side
    9,340.99x = 69,082,081.68
  5. Step 5: Solve for x
    x = 69,082,081.68/9,340.99
  6. Step 6: Final answer
    x = 7,395.59

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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.