Home / 7,085.76-9,819.60-6,947.52

Finding the Fourth Proportional to 7,085.76, 9,819.60 and 6,947.52

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Solution

The fourth proportional to 7,085.76, 9,819.60 and 6,947.52 is: 9,628.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,085.76 : 9,819.60 = 6,947.52 : x
  2. Step 2: Convert to fraction form
    7,085.76/9,819.60 = 6,947.52/x
  3. Step 3: Cross multiply
    7,085.76x = 9,819.60 × 6,947.52
  4. Step 4: Simplify right side
    7,085.76x = 68,221,867.39
  5. Step 5: Solve for x
    x = 68,221,867.39/7,085.76
  6. Step 6: Final answer
    x = 9,628.02

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.