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Finding the Fourth Proportional to 7,263.72, 10,878.30 and 5,328.36

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Solution

The fourth proportional to 7,263.72, 10,878.30 and 5,328.36 is: 7,979.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,263.72 : 10,878.30 = 5,328.36 : x
  2. Step 2: Convert to fraction form
    7,263.72/10,878.30 = 5,328.36/x
  3. Step 3: Cross multiply
    7,263.72x = 10,878.30 × 5,328.36
  4. Step 4: Simplify right side
    7,263.72x = 57,963,498.59
  5. Step 5: Solve for x
    x = 57,963,498.59/7,263.72
  6. Step 6: Final answer
    x = 7,979.86

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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.