Home / 9,708.16-13,397.36-5,515.68

Finding the Fourth Proportional to 9,708.16, 13,397.36 and 5,515.68

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Solution

The fourth proportional to 9,708.16, 13,397.36 and 5,515.68 is: 7,611.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,708.16 : 13,397.36 = 5,515.68 : x
  2. Step 2: Convert to fraction form
    9,708.16/13,397.36 = 5,515.68/x
  3. Step 3: Cross multiply
    9,708.16x = 13,397.36 × 5,515.68
  4. Step 4: Simplify right side
    9,708.16x = 73,895,550.60
  5. Step 5: Solve for x
    x = 73,895,550.60/9,708.16
  6. Step 6: Final answer
    x = 7,611.69

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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.