Home / 7,678.88-11,518.68-2,485.16

Finding the Fourth Proportional to 7,678.88, 11,518.68 and 2,485.16

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Solution

The fourth proportional to 7,678.88, 11,518.68 and 2,485.16 is: 3,727.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,678.88 : 11,518.68 = 2,485.16 : x
  2. Step 2: Convert to fraction form
    7,678.88/11,518.68 = 2,485.16/x
  3. Step 3: Cross multiply
    7,678.88x = 11,518.68 × 2,485.16
  4. Step 4: Simplify right side
    7,678.88x = 28,625,762.79
  5. Step 5: Solve for x
    x = 28,625,762.79/7,678.88
  6. Step 6: Final answer
    x = 3,727.86

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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.