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Finding the Fourth Proportional to 7,017.70, 9,684.40 and 3,873.88

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Solution

The fourth proportional to 7,017.70, 9,684.40 and 3,873.88 is: 5,345.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,017.70 : 9,684.40 = 3,873.88 : x
  2. Step 2: Convert to fraction form
    7,017.70/9,684.40 = 3,873.88/x
  3. Step 3: Cross multiply
    7,017.70x = 9,684.40 × 3,873.88
  4. Step 4: Simplify right side
    7,017.70x = 37,516,203.47
  5. Step 5: Solve for x
    x = 37,516,203.47/7,017.70
  6. Step 6: Final answer
    x = 5,345.94

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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.