Home / 7,678.16-11,507.62-3,290.48

Finding the Fourth Proportional to 7,678.16, 11,507.62 and 3,290.48

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Solution

The fourth proportional to 7,678.16, 11,507.62 and 3,290.48 is: 4,931.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,678.16 : 11,507.62 = 3,290.48 : x
  2. Step 2: Convert to fraction form
    7,678.16/11,507.62 = 3,290.48/x
  3. Step 3: Cross multiply
    7,678.16x = 11,507.62 × 3,290.48
  4. Step 4: Simplify right side
    7,678.16x = 37,865,593.46
  5. Step 5: Solve for x
    x = 37,865,593.46/7,678.16
  6. Step 6: Final answer
    x = 4,931.60

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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.