Home / 2,125.04-2,920.16-1,775.12

Finding the Fourth Proportional to 2,125.04, 2,920.16 and 1,775.12

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Solution

The fourth proportional to 2,125.04, 2,920.16 and 1,775.12 is: 2,439.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,125.04 : 2,920.16 = 1,775.12 : x
  2. Step 2: Convert to fraction form
    2,125.04/2,920.16 = 1,775.12/x
  3. Step 3: Cross multiply
    2,125.04x = 2,920.16 × 1,775.12
  4. Step 4: Simplify right side
    2,125.04x = 5,183,634.42
  5. Step 5: Solve for x
    x = 5,183,634.42/2,125.04
  6. Step 6: Final answer
    x = 2,439.31

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.