Home / 1,578.64-2,180.36-1,248.16

Finding the Fourth Proportional to 1,578.64, 2,180.36 and 1,248.16

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Solution

The fourth proportional to 1,578.64, 2,180.36 and 1,248.16 is: 1,723.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,578.64 : 2,180.36 = 1,248.16 : x
  2. Step 2: Convert to fraction form
    1,578.64/2,180.36 = 1,248.16/x
  3. Step 3: Cross multiply
    1,578.64x = 2,180.36 × 1,248.16
  4. Step 4: Simplify right side
    1,578.64x = 2,721,438.14
  5. Step 5: Solve for x
    x = 2,721,438.14/1,578.64
  6. Step 6: Final answer
    x = 1,723.91

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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.