Home / 9,618.21-13,273.20-5,639.40

Finding the Fourth Proportional to 9,618.21, 13,273.20 and 5,639.40

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Solution

The fourth proportional to 9,618.21, 13,273.20 and 5,639.40 is: 7,782.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,618.21 : 13,273.20 = 5,639.40 : x
  2. Step 2: Convert to fraction form
    9,618.21/13,273.20 = 5,639.40/x
  3. Step 3: Cross multiply
    9,618.21x = 13,273.20 × 5,639.40
  4. Step 4: Simplify right side
    9,618.21x = 74,852,884.08
  5. Step 5: Solve for x
    x = 74,852,884.08/9,618.21
  6. Step 6: Final answer
    x = 7,782.41

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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.