Home / 7,784.80-11,679.06-2,590.72

Finding the Fourth Proportional to 7,784.80, 11,679.06 and 2,590.72

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Solution

The fourth proportional to 7,784.80, 11,679.06 and 2,590.72 is: 3,886.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,784.80 : 11,679.06 = 2,590.72 : x
  2. Step 2: Convert to fraction form
    7,784.80/11,679.06 = 2,590.72/x
  3. Step 3: Cross multiply
    7,784.80x = 11,679.06 × 2,590.72
  4. Step 4: Simplify right side
    7,784.80x = 30,257,174.32
  5. Step 5: Solve for x
    x = 30,257,174.32/7,784.80
  6. Step 6: Final answer
    x = 3,886.70

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.