Home / 7,815.92-10,785.98-4,279.14

Finding the Fourth Proportional to 7,815.92, 10,785.98 and 4,279.14

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Solution

The fourth proportional to 7,815.92, 10,785.98 and 4,279.14 is: 5,905.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,815.92 : 10,785.98 = 4,279.14 : x
  2. Step 2: Convert to fraction form
    7,815.92/10,785.98 = 4,279.14/x
  3. Step 3: Cross multiply
    7,815.92x = 10,785.98 × 4,279.14
  4. Step 4: Simplify right side
    7,815.92x = 46,154,718.46
  5. Step 5: Solve for x
    x = 46,154,718.46/7,815.92
  6. Step 6: Final answer
    x = 5,905.22

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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.