Home / 8,289.72-11,441.10-5,312.70

Finding the Fourth Proportional to 8,289.72, 11,441.10 and 5,312.70

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Solution

The fourth proportional to 8,289.72, 11,441.10 and 5,312.70 is: 7,332.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,289.72 : 11,441.10 = 5,312.70 : x
  2. Step 2: Convert to fraction form
    8,289.72/11,441.10 = 5,312.70/x
  3. Step 3: Cross multiply
    8,289.72x = 11,441.10 × 5,312.70
  4. Step 4: Simplify right side
    8,289.72x = 60,783,131.97
  5. Step 5: Solve for x
    x = 60,783,131.97/8,289.72
  6. Step 6: Final answer
    x = 7,332.35

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Half scale
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.