Home / 3,798.95-5,242.51-2,120.24

Finding the Fourth Proportional to 3,798.95, 5,242.51 and 2,120.24

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Solution

The fourth proportional to 3,798.95, 5,242.51 and 2,120.24 is: 2,925.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,798.95 : 5,242.51 = 2,120.24 : x
  2. Step 2: Convert to fraction form
    3,798.95/5,242.51 = 2,120.24/x
  3. Step 3: Cross multiply
    3,798.95x = 5,242.51 × 2,120.24
  4. Step 4: Simplify right side
    3,798.95x = 11,115,387.21
  5. Step 5: Solve for x
    x = 11,115,387.21/3,798.95
  6. Step 6: Final answer
    x = 2,925.91

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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.