Home / 7,815.84-10,785.86-4,279.27

Finding the Fourth Proportional to 7,815.84, 10,785.86 and 4,279.27

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Solution

The fourth proportional to 7,815.84, 10,785.86 and 4,279.27 is: 5,905.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,815.84 : 10,785.86 = 4,279.27 : x
  2. Step 2: Convert to fraction form
    7,815.84/10,785.86 = 4,279.27/x
  3. Step 3: Cross multiply
    7,815.84x = 10,785.86 × 4,279.27
  4. Step 4: Simplify right side
    7,815.84x = 46,155,607.12
  5. Step 5: Solve for x
    x = 46,155,607.12/7,815.84
  6. Step 6: Final answer
    x = 5,905.39

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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.