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Finding the Fourth Proportional to 6,870, 9,470.88 and 4,885.10

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Solution

The fourth proportional to 6,870, 9,470.88 and 4,885.10 is: 6,734.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,870 : 9,470.88 = 4,885.10 : x
  2. Step 2: Convert to fraction form
    6,870/9,470.88 = 4,885.10/x
  3. Step 3: Cross multiply
    6,870x = 9,470.88 × 4,885.10
  4. Step 4: Simplify right side
    6,870x = 46,266,148.53
  5. Step 5: Solve for x
    x = 46,266,148.53/6,870
  6. Step 6: Final answer
    x = 6,734.52

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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.