Home / 5,278.16-7,918.82-1,580.51

Finding the Fourth Proportional to 5,278.16, 7,918.82 and 1,580.51

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Solution

The fourth proportional to 5,278.16, 7,918.82 and 1,580.51 is: 2,371.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,278.16 : 7,918.82 = 1,580.51 : x
  2. Step 2: Convert to fraction form
    5,278.16/7,918.82 = 1,580.51/x
  3. Step 3: Cross multiply
    5,278.16x = 7,918.82 × 1,580.51
  4. Step 4: Simplify right side
    5,278.16x = 12,515,726.70
  5. Step 5: Solve for x
    x = 12,515,726.70/5,278.16
  6. Step 6: Final answer
    x = 2,371.23

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.