Home / 4,871.69-6,721.35-2,981.30

Finding the Fourth Proportional to 4,871.69, 6,721.35 and 2,981.30

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Solution

The fourth proportional to 4,871.69, 6,721.35 and 2,981.30 is: 4,113.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,871.69 : 6,721.35 = 2,981.30 : x
  2. Step 2: Convert to fraction form
    4,871.69/6,721.35 = 2,981.30/x
  3. Step 3: Cross multiply
    4,871.69x = 6,721.35 × 2,981.30
  4. Step 4: Simplify right side
    4,871.69x = 20,038,345.85
  5. Step 5: Solve for x
    x = 20,038,345.85/4,871.69
  6. Step 6: Final answer
    x = 4,113.22

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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.