Home / 7,815.49-10,785.41-4,279.03

Finding the Fourth Proportional to 7,815.49, 10,785.41 and 4,279.03

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Solution

The fourth proportional to 7,815.49, 10,785.41 and 4,279.03 is: 5,905.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,815.49 : 10,785.41 = 4,279.03 : x
  2. Step 2: Convert to fraction form
    7,815.49/10,785.41 = 4,279.03/x
  3. Step 3: Cross multiply
    7,815.49x = 10,785.41 × 4,279.03
  4. Step 4: Simplify right side
    7,815.49x = 46,151,125.26
  5. Step 5: Solve for x
    x = 46,151,125.26/7,815.49
  6. Step 6: Final answer
    x = 5,905.08

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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.