Home / 7,815.08-10,788.72-5,310.38

Finding the Fourth Proportional to 7,815.08, 10,788.72 and 5,310.38

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Solution

The fourth proportional to 7,815.08, 10,788.72 and 5,310.38 is: 7,330.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,815.08 : 10,788.72 = 5,310.38 : x
  2. Step 2: Convert to fraction form
    7,815.08/10,788.72 = 5,310.38/x
  3. Step 3: Cross multiply
    7,815.08x = 10,788.72 × 5,310.38
  4. Step 4: Simplify right side
    7,815.08x = 57,292,202.91
  5. Step 5: Solve for x
    x = 57,292,202.91/7,815.08
  6. Step 6: Final answer
    x = 7,330.98

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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.