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Finding the Fourth Proportional to 7,126.64, 9,835.08 and 5,031.44

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Solution

The fourth proportional to 7,126.64, 9,835.08 and 5,031.44 is: 6,943.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,126.64 : 9,835.08 = 5,031.44 : x
  2. Step 2: Convert to fraction form
    7,126.64/9,835.08 = 5,031.44/x
  3. Step 3: Cross multiply
    7,126.64x = 9,835.08 × 5,031.44
  4. Step 4: Simplify right side
    7,126.64x = 49,484,614.92
  5. Step 5: Solve for x
    x = 49,484,614.92/7,126.64
  6. Step 6: Final answer
    x = 6,943.61

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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.