Home / 5,639.76-7,763.40-4,883.22

Finding the Fourth Proportional to 5,639.76, 7,763.40 and 4,883.22

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Solution

The fourth proportional to 5,639.76, 7,763.40 and 4,883.22 is: 6,721.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,639.76 : 7,763.40 = 4,883.22 : x
  2. Step 2: Convert to fraction form
    5,639.76/7,763.40 = 4,883.22/x
  3. Step 3: Cross multiply
    5,639.76x = 7,763.40 × 4,883.22
  4. Step 4: Simplify right side
    5,639.76x = 37,910,390.15
  5. Step 5: Solve for x
    x = 37,910,390.15/5,639.76
  6. Step 6: Final answer
    x = 6,721.99

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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.