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Finding the Fourth Proportional to 5,253.64, 7,881.84 and 1,790.86

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Solution

The fourth proportional to 5,253.64, 7,881.84 and 1,790.86 is: 2,686.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,253.64 : 7,881.84 = 1,790.86 : x
  2. Step 2: Convert to fraction form
    5,253.64/7,881.84 = 1,790.86/x
  3. Step 3: Cross multiply
    5,253.64x = 7,881.84 × 1,790.86
  4. Step 4: Simplify right side
    5,253.64x = 14,115,271.98
  5. Step 5: Solve for x
    x = 14,115,271.98/5,253.64
  6. Step 6: Final answer
    x = 2,686.76

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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.