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Finding the Fourth Proportional to 8,341.68, 11,511 and 4,615.76

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Solution

The fourth proportional to 8,341.68, 11,511 and 4,615.76 is: 6,369.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,341.68 : 11,511 = 4,615.76 : x
  2. Step 2: Convert to fraction form
    8,341.68/11,511 = 4,615.76/x
  3. Step 3: Cross multiply
    8,341.68x = 11,511 × 4,615.76
  4. Step 4: Simplify right side
    8,341.68x = 53,132,013.36
  5. Step 5: Solve for x
    x = 53,132,013.36/8,341.68
  6. Step 6: Final answer
    x = 6,369.46

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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.