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Finding the Fourth Proportional to 7,117.92, 9,818.04 and 5,018.40

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Solution

The fourth proportional to 7,117.92, 9,818.04 and 5,018.40 is: 6,922.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,117.92 : 9,818.04 = 5,018.40 : x
  2. Step 2: Convert to fraction form
    7,117.92/9,818.04 = 5,018.40/x
  3. Step 3: Cross multiply
    7,117.92x = 9,818.04 × 5,018.40
  4. Step 4: Simplify right side
    7,117.92x = 49,270,851.94
  5. Step 5: Solve for x
    x = 49,270,851.94/7,117.92
  6. Step 6: Final answer
    x = 6,922.09

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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.