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Finding the Fourth Proportional to 7,579.80, 10,460.82 and 4,223.28

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Solution

The fourth proportional to 7,579.80, 10,460.82 and 4,223.28 is: 5,828.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,579.80 : 10,460.82 = 4,223.28 : x
  2. Step 2: Convert to fraction form
    7,579.80/10,460.82 = 4,223.28/x
  3. Step 3: Cross multiply
    7,579.80x = 10,460.82 × 4,223.28
  4. Step 4: Simplify right side
    7,579.80x = 44,178,971.89
  5. Step 5: Solve for x
    x = 44,178,971.89/7,579.80
  6. Step 6: Final answer
    x = 5,828.51

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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.