Home / 8,621.49-12,948.63-5,357.39

Finding the Fourth Proportional to 8,621.49, 12,948.63 and 5,357.39

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Solution

The fourth proportional to 8,621.49, 12,948.63 and 5,357.39 is: 8,046.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,621.49 : 12,948.63 = 5,357.39 : x
  2. Step 2: Convert to fraction form
    8,621.49/12,948.63 = 5,357.39/x
  3. Step 3: Cross multiply
    8,621.49x = 12,948.63 × 5,357.39
  4. Step 4: Simplify right side
    8,621.49x = 69,370,894.08
  5. Step 5: Solve for x
    x = 69,370,894.08/8,621.49
  6. Step 6: Final answer
    x = 8,046.28

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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.