Home / 5,160.36-7,740.45-1,264.80

Finding the Fourth Proportional to 5,160.36, 7,740.45 and 1,264.80

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Solution

The fourth proportional to 5,160.36, 7,740.45 and 1,264.80 is: 1,897.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,160.36 : 7,740.45 = 1,264.80 : x
  2. Step 2: Convert to fraction form
    5,160.36/7,740.45 = 1,264.80/x
  3. Step 3: Cross multiply
    5,160.36x = 7,740.45 × 1,264.80
  4. Step 4: Simplify right side
    5,160.36x = 9,790,121.16
  5. Step 5: Solve for x
    x = 9,790,121.16/5,160.36
  6. Step 6: Final answer
    x = 1,897.18

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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.