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Finding the Fourth Proportional to 4,929.48, 6,802.78 and 2,721.48

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Solution

The fourth proportional to 4,929.48, 6,802.78 and 2,721.48 is: 3,755.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,929.48 : 6,802.78 = 2,721.48 : x
  2. Step 2: Convert to fraction form
    4,929.48/6,802.78 = 2,721.48/x
  3. Step 3: Cross multiply
    4,929.48x = 6,802.78 × 2,721.48
  4. Step 4: Simplify right side
    4,929.48x = 18,513,629.71
  5. Step 5: Solve for x
    x = 18,513,629.71/4,929.48
  6. Step 6: Final answer
    x = 3,755.70

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1.5x scale

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.