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Finding the Fourth Proportional to 7,220.83, 9,948.90 and 4,858.87

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Solution

The fourth proportional to 7,220.83, 9,948.90 and 4,858.87 is: 6,694.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,220.83 : 9,948.90 = 4,858.87 : x
  2. Step 2: Convert to fraction form
    7,220.83/9,948.90 = 4,858.87/x
  3. Step 3: Cross multiply
    7,220.83x = 9,948.90 × 4,858.87
  4. Step 4: Simplify right side
    7,220.83x = 48,340,411.74
  5. Step 5: Solve for x
    x = 48,340,411.74/7,220.83
  6. Step 6: Final answer
    x = 6,694.58

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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.