Home / 5,240.10-7,860.15-3,271.80

Finding the Fourth Proportional to 5,240.10, 7,860.15 and 3,271.80

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Solution

The fourth proportional to 5,240.10, 7,860.15 and 3,271.80 is: 4,907.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,240.10 : 7,860.15 = 3,271.80 : x
  2. Step 2: Convert to fraction form
    5,240.10/7,860.15 = 3,271.80/x
  3. Step 3: Cross multiply
    5,240.10x = 7,860.15 × 3,271.80
  4. Step 4: Simplify right side
    5,240.10x = 25,716,838.77
  5. Step 5: Solve for x
    x = 25,716,838.77/5,240.10
  6. Step 6: Final answer
    x = 4,907.70

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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.