Home / 9,788.19-13,507.80-5,311.98

Finding the Fourth Proportional to 9,788.19, 13,507.80 and 5,311.98

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Solution

The fourth proportional to 9,788.19, 13,507.80 and 5,311.98 is: 7,330.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,788.19 : 13,507.80 = 5,311.98 : x
  2. Step 2: Convert to fraction form
    9,788.19/13,507.80 = 5,311.98/x
  3. Step 3: Cross multiply
    9,788.19x = 13,507.80 × 5,311.98
  4. Step 4: Simplify right side
    9,788.19x = 71,753,069.35
  5. Step 5: Solve for x
    x = 71,753,069.35/9,788.19
  6. Step 6: Final answer
    x = 7,330.58

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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.