Home / 9,085.60-13,628.40-5,780.80

Finding the Fourth Proportional to 9,085.60, 13,628.40 and 5,780.80

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Solution

The fourth proportional to 9,085.60, 13,628.40 and 5,780.80 is: 8,671.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,085.60 : 13,628.40 = 5,780.80 : x
  2. Step 2: Convert to fraction form
    9,085.60/13,628.40 = 5,780.80/x
  3. Step 3: Cross multiply
    9,085.60x = 13,628.40 × 5,780.80
  4. Step 4: Simplify right side
    9,085.60x = 78,783,054.72
  5. Step 5: Solve for x
    x = 78,783,054.72/9,085.60
  6. Step 6: Final answer
    x = 8,671.20

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.