Home / 8,869.79-12,239.82-4,890.22

Finding the Fourth Proportional to 8,869.79, 12,239.82 and 4,890.22

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Solution

The fourth proportional to 8,869.79, 12,239.82 and 4,890.22 is: 6,748.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,869.79 : 12,239.82 = 4,890.22 : x
  2. Step 2: Convert to fraction form
    8,869.79/12,239.82 = 4,890.22/x
  3. Step 3: Cross multiply
    8,869.79x = 12,239.82 × 4,890.22
  4. Step 4: Simplify right side
    8,869.79x = 59,855,412.56
  5. Step 5: Solve for x
    x = 59,855,412.56/8,869.79
  6. Step 6: Final answer
    x = 6,748.23

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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.