Home / 9,688.92-13,370.87-5,440.21

Finding the Fourth Proportional to 9,688.92, 13,370.87 and 5,440.21

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Solution

The fourth proportional to 9,688.92, 13,370.87 and 5,440.21 is: 7,507.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,688.92 : 13,370.87 = 5,440.21 : x
  2. Step 2: Convert to fraction form
    9,688.92/13,370.87 = 5,440.21/x
  3. Step 3: Cross multiply
    9,688.92x = 13,370.87 × 5,440.21
  4. Step 4: Simplify right side
    9,688.92x = 72,740,396.07
  5. Step 5: Solve for x
    x = 72,740,396.07/9,688.92
  6. Step 6: Final answer
    x = 7,507.59

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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.