Home / 1,578.24-2,180.16-1,402.56

Finding the Fourth Proportional to 1,578.24, 2,180.16 and 1,402.56

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Solution

The fourth proportional to 1,578.24, 2,180.16 and 1,402.56 is: 1,937.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,578.24 : 2,180.16 = 1,402.56 : x
  2. Step 2: Convert to fraction form
    1,578.24/2,180.16 = 1,402.56/x
  3. Step 3: Cross multiply
    1,578.24x = 2,180.16 × 1,402.56
  4. Step 4: Simplify right side
    1,578.24x = 3,057,805.21
  5. Step 5: Solve for x
    x = 3,057,805.21/1,578.24
  6. Step 6: Final answer
    x = 1,937.48

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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.