Home / 7,685.28-11,519.71-5,487.34

Finding the Fourth Proportional to 7,685.28, 11,519.71 and 5,487.34

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Solution

The fourth proportional to 7,685.28, 11,519.71 and 5,487.34 is: 8,225.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,685.28 : 11,519.71 = 5,487.34 : x
  2. Step 2: Convert to fraction form
    7,685.28/11,519.71 = 5,487.34/x
  3. Step 3: Cross multiply
    7,685.28x = 11,519.71 × 5,487.34
  4. Step 4: Simplify right side
    7,685.28x = 63,212,565.47
  5. Step 5: Solve for x
    x = 63,212,565.47/7,685.28
  6. Step 6: Final answer
    x = 8,225.15

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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.