Home / 7,688.76-11,532.68-2,690.78

Finding the Fourth Proportional to 7,688.76, 11,532.68 and 2,690.78

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Solution

The fourth proportional to 7,688.76, 11,532.68 and 2,690.78 is: 4,036.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,688.76 : 11,532.68 = 2,690.78 : x
  2. Step 2: Convert to fraction form
    7,688.76/11,532.68 = 2,690.78/x
  3. Step 3: Cross multiply
    7,688.76x = 11,532.68 × 2,690.78
  4. Step 4: Simplify right side
    7,688.76x = 31,031,843.66
  5. Step 5: Solve for x
    x = 31,031,843.66/7,688.76
  6. Step 6: Final answer
    x = 4,036.00

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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.