Home / 7,765.15-11,638.01-6,115.18

Finding the Fourth Proportional to 7,765.15, 11,638.01 and 6,115.18

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Solution

The fourth proportional to 7,765.15, 11,638.01 and 6,115.18 is: 9,165.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,765.15 : 11,638.01 = 6,115.18 : x
  2. Step 2: Convert to fraction form
    7,765.15/11,638.01 = 6,115.18/x
  3. Step 3: Cross multiply
    7,765.15x = 11,638.01 × 6,115.18
  4. Step 4: Simplify right side
    7,765.15x = 71,168,525.99
  5. Step 5: Solve for x
    x = 71,168,525.99/7,765.15
  6. Step 6: Final answer
    x = 9,165.12

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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.