Home / 3,510.30-5,240.55-3,121.50

Finding the Fourth Proportional to 3,510.30, 5,240.55 and 3,121.50

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Solution

The fourth proportional to 3,510.30, 5,240.55 and 3,121.50 is: 4,660.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,510.30 : 5,240.55 = 3,121.50 : x
  2. Step 2: Convert to fraction form
    3,510.30/5,240.55 = 3,121.50/x
  3. Step 3: Cross multiply
    3,510.30x = 5,240.55 × 3,121.50
  4. Step 4: Simplify right side
    3,510.30x = 16,358,376.83
  5. Step 5: Solve for x
    x = 16,358,376.83/3,510.30
  6. Step 6: Final answer
    x = 4,660.11

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.