Home / 8,623.79-11,900.50-5,272.21

Finding the Fourth Proportional to 8,623.79, 11,900.50 and 5,272.21

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Solution

The fourth proportional to 8,623.79, 11,900.50 and 5,272.21 is: 7,275.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,623.79 : 11,900.50 = 5,272.21 : x
  2. Step 2: Convert to fraction form
    8,623.79/11,900.50 = 5,272.21/x
  3. Step 3: Cross multiply
    8,623.79x = 11,900.50 × 5,272.21
  4. Step 4: Simplify right side
    8,623.79x = 62,741,935.11
  5. Step 5: Solve for x
    x = 62,741,935.11/8,623.79
  6. Step 6: Final answer
    x = 7,275.45

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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.