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Finding the Fourth Proportional to 7,560, 11,339.39 and 4,778.56

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Solution

The fourth proportional to 7,560, 11,339.39 and 4,778.56 is: 7,167.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,560 : 11,339.39 = 4,778.56 : x
  2. Step 2: Convert to fraction form
    7,560/11,339.39 = 4,778.56/x
  3. Step 3: Cross multiply
    7,560x = 11,339.39 × 4,778.56
  4. Step 4: Simplify right side
    7,560x = 54,185,931.59
  5. Step 5: Solve for x
    x = 54,185,931.59/7,560
  6. Step 6: Final answer
    x = 7,167.45

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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.