Home / 5,815.29-8,721.63-1,655.21

Finding the Fourth Proportional to 5,815.29, 8,721.63 and 1,655.21

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Solution

The fourth proportional to 5,815.29, 8,721.63 and 1,655.21 is: 2,482.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,815.29 : 8,721.63 = 1,655.21 : x
  2. Step 2: Convert to fraction form
    5,815.29/8,721.63 = 1,655.21/x
  3. Step 3: Cross multiply
    5,815.29x = 8,721.63 × 1,655.21
  4. Step 4: Simplify right side
    5,815.29x = 14,436,085.58
  5. Step 5: Solve for x
    x = 14,436,085.58/5,815.29
  6. Step 6: Final answer
    x = 2,482.44

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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.