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Finding the Fourth Proportional to 5,440, 7,508.60 and 3,316.98

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Solution

The fourth proportional to 5,440, 7,508.60 and 3,316.98 is: 4,578.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,440 : 7,508.60 = 3,316.98 : x
  2. Step 2: Convert to fraction form
    5,440/7,508.60 = 3,316.98/x
  3. Step 3: Cross multiply
    5,440x = 7,508.60 × 3,316.98
  4. Step 4: Simplify right side
    5,440x = 24,905,876.03
  5. Step 5: Solve for x
    x = 24,905,876.03/5,440
  6. Step 6: Final answer
    x = 4,578.29

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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.