Home / 3,521.46-5,280.76-1,328.99

Finding the Fourth Proportional to 3,521.46, 5,280.76 and 1,328.99

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Solution

The fourth proportional to 3,521.46, 5,280.76 and 1,328.99 is: 1,992.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,521.46 : 5,280.76 = 1,328.99 : x
  2. Step 2: Convert to fraction form
    3,521.46/5,280.76 = 1,328.99/x
  3. Step 3: Cross multiply
    3,521.46x = 5,280.76 × 1,328.99
  4. Step 4: Simplify right side
    3,521.46x = 7,018,077.23
  5. Step 5: Solve for x
    x = 7,018,077.23/3,521.46
  6. Step 6: Final answer
    x = 1,992.95

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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.