Home / 5,326.54-7,989.81-1,628.78

Finding the Fourth Proportional to 5,326.54, 7,989.81 and 1,628.78

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Solution

The fourth proportional to 5,326.54, 7,989.81 and 1,628.78 is: 2,443.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,326.54 : 7,989.81 = 1,628.78 : x
  2. Step 2: Convert to fraction form
    5,326.54/7,989.81 = 1,628.78/x
  3. Step 3: Cross multiply
    5,326.54x = 7,989.81 × 1,628.78
  4. Step 4: Simplify right side
    5,326.54x = 13,013,596.67
  5. Step 5: Solve for x
    x = 13,013,596.67/5,326.54
  6. Step 6: Final answer
    x = 2,443.16

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.