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Finding the Fourth Proportional to 6,495.18, 8,920.16 and 5,445.42

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Solution

The fourth proportional to 6,495.18, 8,920.16 and 5,445.42 is: 7,478.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,495.18 : 8,920.16 = 5,445.42 : x
  2. Step 2: Convert to fraction form
    6,495.18/8,920.16 = 5,445.42/x
  3. Step 3: Cross multiply
    6,495.18x = 8,920.16 × 5,445.42
  4. Step 4: Simplify right side
    6,495.18x = 48,573,990.44
  5. Step 5: Solve for x
    x = 48,573,990.44/6,495.18
  6. Step 6: Final answer
    x = 7,478.47

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.