Home / 3,521.31-5,280.36-1,328.48

Finding the Fourth Proportional to 3,521.31, 5,280.36 and 1,328.48

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Solution

The fourth proportional to 3,521.31, 5,280.36 and 1,328.48 is: 1,992.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,521.31 : 5,280.36 = 1,328.48 : x
  2. Step 2: Convert to fraction form
    3,521.31/5,280.36 = 1,328.48/x
  3. Step 3: Cross multiply
    3,521.31x = 5,280.36 × 1,328.48
  4. Step 4: Simplify right side
    3,521.31x = 7,014,852.65
  5. Step 5: Solve for x
    x = 7,014,852.65/3,521.31
  6. Step 6: Final answer
    x = 1,992.11

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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.