Home / 9,780.60-13,497.39-5,530.80

Finding the Fourth Proportional to 9,780.60, 13,497.39 and 5,530.80

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Solution

The fourth proportional to 9,780.60, 13,497.39 and 5,530.80 is: 7,632.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,780.60 : 13,497.39 = 5,530.80 : x
  2. Step 2: Convert to fraction form
    9,780.60/13,497.39 = 5,530.80/x
  3. Step 3: Cross multiply
    9,780.60x = 13,497.39 × 5,530.80
  4. Step 4: Simplify right side
    9,780.60x = 74,651,364.61
  5. Step 5: Solve for x
    x = 74,651,364.61/9,780.60
  6. Step 6: Final answer
    x = 7,632.60

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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.