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Finding the Fourth Proportional to 7,857.72, 10,843.65 and 4,500.63

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Solution

The fourth proportional to 7,857.72, 10,843.65 and 4,500.63 is: 6,210.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,857.72 : 10,843.65 = 4,500.63 : x
  2. Step 2: Convert to fraction form
    7,857.72/10,843.65 = 4,500.63/x
  3. Step 3: Cross multiply
    7,857.72x = 10,843.65 × 4,500.63
  4. Step 4: Simplify right side
    7,857.72x = 48,803,256.50
  5. Step 5: Solve for x
    x = 48,803,256.50/7,857.72
  6. Step 6: Final answer
    x = 6,210.87

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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.