Home / 2,021.32-2,782.92-1,572.65

Finding the Fourth Proportional to 2,021.32, 2,782.92 and 1,572.65

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Solution

The fourth proportional to 2,021.32, 2,782.92 and 1,572.65 is: 2,165.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,021.32 : 2,782.92 = 1,572.65 : x
  2. Step 2: Convert to fraction form
    2,021.32/2,782.92 = 1,572.65/x
  3. Step 3: Cross multiply
    2,021.32x = 2,782.92 × 1,572.65
  4. Step 4: Simplify right side
    2,021.32x = 4,376,549.05
  5. Step 5: Solve for x
    x = 4,376,549.05/2,021.32
  6. Step 6: Final answer
    x = 2,165.19

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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.