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Finding the Fourth Proportional to 8,498.23, 11,727.95 and 4,721.40

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Solution

The fourth proportional to 8,498.23, 11,727.95 and 4,721.40 is: 6,515.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,498.23 : 11,727.95 = 4,721.40 : x
  2. Step 2: Convert to fraction form
    8,498.23/11,727.95 = 4,721.40/x
  3. Step 3: Cross multiply
    8,498.23x = 11,727.95 × 4,721.40
  4. Step 4: Simplify right side
    8,498.23x = 55,372,343.13
  5. Step 5: Solve for x
    x = 55,372,343.13/8,498.23
  6. Step 6: Final answer
    x = 6,515.75

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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.