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Finding the Fourth Proportional to 4,687.92, 7,031.88 and 1,225.08

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Solution

The fourth proportional to 4,687.92, 7,031.88 and 1,225.08 is: 1,837.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,687.92 : 7,031.88 = 1,225.08 : x
  2. Step 2: Convert to fraction form
    4,687.92/7,031.88 = 1,225.08/x
  3. Step 3: Cross multiply
    4,687.92x = 7,031.88 × 1,225.08
  4. Step 4: Simplify right side
    4,687.92x = 8,614,615.55
  5. Step 5: Solve for x
    x = 8,614,615.55/4,687.92
  6. Step 6: Final answer
    x = 1,837.62

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.