Home / 5,160.48-7,117.83-3,172.13

Finding the Fourth Proportional to 5,160.48, 7,117.83 and 3,172.13

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Solution

The fourth proportional to 5,160.48, 7,117.83 and 3,172.13 is: 4,375.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,160.48 : 7,117.83 = 3,172.13 : x
  2. Step 2: Convert to fraction form
    5,160.48/7,117.83 = 3,172.13/x
  3. Step 3: Cross multiply
    5,160.48x = 7,117.83 × 3,172.13
  4. Step 4: Simplify right side
    5,160.48x = 22,578,711.77
  5. Step 5: Solve for x
    x = 22,578,711.77/5,160.48
  6. Step 6: Final answer
    x = 4,375.31

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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.