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Finding the Fourth Proportional to 6,377.46, 8,804.10 and 3,988.76

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Solution

The fourth proportional to 6,377.46, 8,804.10 and 3,988.76 is: 5,506.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,377.46 : 8,804.10 = 3,988.76 : x
  2. Step 2: Convert to fraction form
    6,377.46/8,804.10 = 3,988.76/x
  3. Step 3: Cross multiply
    6,377.46x = 8,804.10 × 3,988.76
  4. Step 4: Simplify right side
    6,377.46x = 35,117,397.90
  5. Step 5: Solve for x
    x = 35,117,397.90/6,377.46
  6. Step 6: Final answer
    x = 5,506.49

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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.