Home / 5,247.71-7,871.58-2,127.77

Finding the Fourth Proportional to 5,247.71, 7,871.58 and 2,127.77

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Solution

The fourth proportional to 5,247.71, 7,871.58 and 2,127.77 is: 3,191.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,247.71 : 7,871.58 = 2,127.77 : x
  2. Step 2: Convert to fraction form
    5,247.71/7,871.58 = 2,127.77/x
  3. Step 3: Cross multiply
    5,247.71x = 7,871.58 × 2,127.77
  4. Step 4: Simplify right side
    5,247.71x = 16,748,911.78
  5. Step 5: Solve for x
    x = 16,748,911.78/5,247.71
  6. Step 6: Final answer
    x = 3,191.66

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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.