Home / 6,752.40-10,128.60-5,112.15

Finding the Fourth Proportional to 6,752.40, 10,128.60 and 5,112.15

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Solution

The fourth proportional to 6,752.40, 10,128.60 and 5,112.15 is: 7,668.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,752.40 : 10,128.60 = 5,112.15 : x
  2. Step 2: Convert to fraction form
    6,752.40/10,128.60 = 5,112.15/x
  3. Step 3: Cross multiply
    6,752.40x = 10,128.60 × 5,112.15
  4. Step 4: Simplify right side
    6,752.40x = 51,778,922.49
  5. Step 5: Solve for x
    x = 51,778,922.49/6,752.40
  6. Step 6: Final answer
    x = 7,668.23

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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.