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Finding the Fourth Proportional to 5,921.76, 8,875.74 and 4,456.20

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Solution

The fourth proportional to 5,921.76, 8,875.74 and 4,456.20 is: 6,679.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,921.76 : 8,875.74 = 4,456.20 : x
  2. Step 2: Convert to fraction form
    5,921.76/8,875.74 = 4,456.20/x
  3. Step 3: Cross multiply
    5,921.76x = 8,875.74 × 4,456.20
  4. Step 4: Simplify right side
    5,921.76x = 39,552,072.59
  5. Step 5: Solve for x
    x = 39,552,072.59/5,921.76
  6. Step 6: Final answer
    x = 6,679.11

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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.