Home / 8,721.63-12,035.93-4,742.78

Finding the Fourth Proportional to 8,721.63, 12,035.93 and 4,742.78

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Solution

The fourth proportional to 8,721.63, 12,035.93 and 4,742.78 is: 6,545.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,721.63 : 12,035.93 = 4,742.78 : x
  2. Step 2: Convert to fraction form
    8,721.63/12,035.93 = 4,742.78/x
  3. Step 3: Cross multiply
    8,721.63x = 12,035.93 × 4,742.78
  4. Step 4: Simplify right side
    8,721.63x = 57,083,768.09
  5. Step 5: Solve for x
    x = 57,083,768.09/8,721.63
  6. Step 6: Final answer
    x = 6,545.08

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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.