Home / 8,428.43-12,618.15-4,907.70

Finding the Fourth Proportional to 8,428.43, 12,618.15 and 4,907.70

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Solution

The fourth proportional to 8,428.43, 12,618.15 and 4,907.70 is: 7,347.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,428.43 : 12,618.15 = 4,907.70 : x
  2. Step 2: Convert to fraction form
    8,428.43/12,618.15 = 4,907.70/x
  3. Step 3: Cross multiply
    8,428.43x = 12,618.15 × 4,907.70
  4. Step 4: Simplify right side
    8,428.43x = 61,926,094.76
  5. Step 5: Solve for x
    x = 61,926,094.76/8,428.43
  6. Step 6: Final answer
    x = 7,347.29

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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.