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Finding the Fourth Proportional to 11,340.78, 15,650.98 and 6,305.04

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Solution

The fourth proportional to 11,340.78, 15,650.98 and 6,305.04 is: 8,701.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,340.78 : 15,650.98 = 6,305.04 : x
  2. Step 2: Convert to fraction form
    11,340.78/15,650.98 = 6,305.04/x
  3. Step 3: Cross multiply
    11,340.78x = 15,650.98 × 6,305.04
  4. Step 4: Simplify right side
    11,340.78x = 98,680,054.94
  5. Step 5: Solve for x
    x = 98,680,054.94/11,340.78
  6. Step 6: Final answer
    x = 8,701.35

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Half scale
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Double 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.