Home / 3,820.99-5,271.04-2,640.01

Finding the Fourth Proportional to 3,820.99, 5,271.04 and 2,640.01

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Solution

The fourth proportional to 3,820.99, 5,271.04 and 2,640.01 is: 3,641.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,820.99 : 5,271.04 = 2,640.01 : x
  2. Step 2: Convert to fraction form
    3,820.99/5,271.04 = 2,640.01/x
  3. Step 3: Cross multiply
    3,820.99x = 5,271.04 × 2,640.01
  4. Step 4: Simplify right side
    3,820.99x = 13,915,598.31
  5. Step 5: Solve for x
    x = 13,915,598.31/3,820.99
  6. Step 6: Final answer
    x = 3,641.88

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.