Home / 8,869.63-12,239.15-4,890.51

Finding the Fourth Proportional to 8,869.63, 12,239.15 and 4,890.51

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Solution

The fourth proportional to 8,869.63, 12,239.15 and 4,890.51 is: 6,748.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,869.63 : 12,239.15 = 4,890.51 : x
  2. Step 2: Convert to fraction form
    8,869.63/12,239.15 = 4,890.51/x
  3. Step 3: Cross multiply
    8,869.63x = 12,239.15 × 4,890.51
  4. Step 4: Simplify right side
    8,869.63x = 59,855,624.27
  5. Step 5: Solve for x
    x = 59,855,624.27/8,869.63
  6. Step 6: Final answer
    x = 6,748.38

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Double scale
Find fourth proportional to 8,870.63, 12,240.53 and 4,891.51
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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.