Home / 9,889.34-13,645.85-5,639.73

Finding the Fourth Proportional to 9,889.34, 13,645.85 and 5,639.73

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Solution

The fourth proportional to 9,889.34, 13,645.85 and 5,639.73 is: 7,782.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,889.34 : 13,645.85 = 5,639.73 : x
  2. Step 2: Convert to fraction form
    9,889.34/13,645.85 = 5,639.73/x
  3. Step 3: Cross multiply
    9,889.34x = 13,645.85 × 5,639.73
  4. Step 4: Simplify right side
    9,889.34x = 76,958,885.77
  5. Step 5: Solve for x
    x = 76,958,885.77/9,889.34
  6. Step 6: Final answer
    x = 7,782.00

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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.